Martha was as good as her word. For the next several days after their office encounter, Teresa felt a soreness in her pussy and, especially, in her tight ass. The two women had fought a long, hard, asshole to asshole, dildo battle during the evening’s encounter, an exhausting struggle that had left them both gasping and drained on the floor of the teacher’s bathroom. It was almost 9PM before Martha finally allowed Teresa to leave to return home. Teresa was sore, but she was quite sure that Martha was every bit as sore as she was.

Over the next few days, Teresa prepared for her final exams. It was already mid-June and the exam session was just beginning. In a few days time, she would be done her tests. Then, the following week, school would recess for the summer and she would be a high school graduate. The formal grad events of the year, like the prom, had been carried out weeks before. She had gone to her prom with Grant, her on-and-off boyfriend of the past year. She enjoyed Grant’s company, mostly because he was easily controlled and good in bed. But her obligation to be Martha’s sex slave had seriously eaten into her time with Grant and, if truth be told, Teresa really did not mind. The fact was that she loved sexfighting other women more than anything else. She loved using her sexual organs, her womanly power, to overwhelm and dominate other beautiful women. She had continued to regularly attend Cynthia’s classes, looking for new tricks to use in her battles with Martha. She was sure that she was a much better fuckfighter now than she had been when this whole thing had started. Now, she often fought Cynthia herself to a standstill. Sometimes, she even won her matches against the redhead dominatrix, and if she could do that, she had to be more than a match for Martha. But she could not bring her new skills to bear against Martha, who would simply order her to back off whenever the teacher felt that she might be in danger of losing control. And, to be perfectly honest, she really did not know who came out on top during Cynthia and Martha’s regular sexfights.

Teresa waited apprehensively. Would Martha agree to her proposal? Could the teacher turn down the temptation of having Teresa as her sex slave for another year? The girl was certain that the blonde bitch could not resist, and she was even more certain that Martha’s confidence in her own sexual prowess would be enough to get her to agree to Teresa’s terms. Then she would have the bitch exactly where she wanted her!

Wednesday, Thursday, Friday passed. Teresa struggled to concentrate on her studying, even as her mind and body burned with anticipation. Martha said she would answer Teresa’s challenge by the end of the weekend. Teresa was sure that Martha knew exactly what she was going to say, she was just torturing Teresa now for the fun of it. Sure enough, late Sunday night, just shortly after she had gone to bed, Teresa’s cell phone rang.

Teresa usually slept in the nude, but tonight she had gone to bed wearing a sheer but course nightie, which applied a delicious friction to her nipples. She had just started to masturbate, seeking relief from the intense sexual tension that had built up in her over the past few days. When the cell chimed, she picked it up immediately, her heart pounding with excitement.

“Hello, little whore,” Martha breathed into the line. Teresa resisted shouting out with eagerness and forced herself to calm down.

“What do you want, skank?,” Teresa shot back. Her body was tense with anticipation. Her thick clit stood at attention from her earlier ministrations and she could not help stroking herself as Martha spoke.

“I’ve been thinking about your proposal, Teresa,” Martha said. “I’ve given it a lot of thought, in fact.” Martha paused, stretching out the moment. “And I’ve decided to turn it down. What you have to offer isn’t so great that I can’t get it somewhere else.”

Teresa felt her heart drop through the floor as she was hit with the weight of her disappointment and frustration. But she knew that there was a good chance Martha was lying, that the teacher was just saying this to torture her even more. Teresa was sure that she could not be so easily replaced.

“I’m sorry to hear that, Martha,” Teresa replied, after a moment. “But I think that you’re wrong. Finding someone like me, who can match you in every way, who actually wants to be sexfighting with you – that’s going to be hard. It’s going to be really hard.”

“Oh, I don’t know,” Martha began. “Busty bitches are a dime a dozen. I’ve had my eye on that big redhead in the 11th grade for a while now…”

“That’s quite a risk, Martha,” Teresa said, trying not to sound desperate. “And I think that you’re too smart to push your luck. The last thing you need is someone complaining to the cops about the lesbian gym teacher hitting on her female students.”

“I’m not quite that stupid, girl,” Martha cooed. “I’ve got my ways…”

“Really?” Teresa smirked. “Do you really think you’ll get another girl with a body like mine? With tits like mine?” Her voice dropped to a seductive whisper. “Do you remember what it’s like when our tits come together, Martha?” she rasped. “How tight it feels, how our tits crush, how hot, how our nipples lock up and rub and rub and burn, how our tits slide and push, and how much we sweat, and how it feels to have tits sliding against each other in the sweat…” Teresa felt her nipples grow to sharp, thick points even as she spoke. She touched her clit.

“Sluts like you are a dime a dozen, whore,” Martha snapped, but Teresa could hear the catch in the other woman’s throat. She sensed that Martha was masturbating as well, as they spoke.

“Fuck you,” Teresa whispered, her voice now coming in hot pants as she rubbed and caressed her growing clit.

“If I was there right now, I’d be riding your clit like a horse, you little cunt,” Martha groaned at her over the line. There was no doubt now – both women were vigorously pleasuring themselves as they spoke.

“I’d be fucking your slick little clit into paste, you cuntlicker,” Teresa moaned in reply.

They fell silent, except for their pants and gasps as they each worked their own clits and cunts, as they groaned and moaned in pleasure. Martha and Teresa exchanged whispered obscenities and threats as they each stimulated themselves, both turned on by the knowledge that they were doing this together. They told each other what they would do to the other. Laying the phone by her pillow, right next to her mouth, Teresa pumped herself vigorously, caressing and stroking her throbbing clit. At the same time, she could hear the cries and animal groans coming over the phone from Martha.

Ten minutes later, the student came in a hard gush of cum. She moaned and gritted her teeth, then pulled her pillow over face to muffle her cries of pleasure, trying to keep desperately from screaming out, knowing that would probably bring her parents. Dimly, she heard a tinny cry of sheer joy emanating from the cell phone. Gasping, she pulled the phone closer to her ear, so she could hear Martha’s pants and moans as the teacher recovered from her own orgasmic conclusion. After a minute or so, Martha found her voice.

“Come to my office tomorrow at 5,” Martha panted. “Come prepared to be fucked until you’re bow-legged. I’m going to get my money’s worth out of my last few nights with your cunt and tits. And don’t forget I’m your mistress, you little bitch.”

Martha hung up without waiting for Teresa’s reply. Teresa snapped her phone shut in anger. Her gambit failed. She was not going to have a chance to redeem herself against Martha – at least, not in the near future. But she had not entirely given up hope. All of this might be part of Martha’s game. Teresa was sure that Martha could not let her go that easily. Replacing Teresa as her sex toy would be very difficult and Martha had to know this. But what if Martha knew things that Teresa did not? What if she really did have another young woman lined up, another emerging Alpha Bitch she could enjoy dominating and humiliating? No, Teresa was sure that she would have heard about such a person. Clinging to this slim hope, Teresa lapsed into a deep sleep, one hand fondling her tit, the other nestled in the dampness between her legs.

The next day, at 5 PM sharp, Teresa knocked on the door of Martha’s office. Teresa had just completed her last exam, so she was not worried about staying late with the teacher, if she had to. Her body was tense and fully aroused. It had been almost a week since her last encounter with Martha and a lot had happened over the past week to get her sexual juices flowing, changing from a trickle into a tide of raw passion.

Teresa was wearing a tight, scoop-necked blue t-shirt and a long, loose dress. Her beautiful, powerful tits strained the fabric and filled the collar of the shirt like meaty melons. On her feet, she wore flat-heeled sandals.

“Come in,” Martha called. Teresa stepped into the office and shut the door. She locked it, and then sat down in a chair facing the teacher, who remained sitting at her desk, working on a schedule. Martha remained occupied for a moment and Teresa used that time to study her beautiful rival. She examined the fine, high-cheek bones, the pert, upturned nose, the thick, rich golden hair. Martha was dressed in a spaghetti-strap sundress, one which presented her massive, thrusting tits in all of their glory. Teresa glared down into the teacher’s magnificent cleavage and felt the sexual tension in her gut flare even higher.

“I see that you’re dressed like a slut,” Teresa snarled after a moment.

Martha smiled, then closed her register.

“You would certainly know about that, wouldn’t you, you little whore?” Martha said, her blazing blue eyes locking with Teresa’s green. “From the way you parade around this school, I’m surprised you haven’t been hiring yourself out. Of course, you just give it away for free, don’t you?”

The women glared at each other hatefully. Teresa leaned forward, giving Martha a clear view of her own deep cleavage. “I don’t think your ugly bags can match this, you cow,” the girl hissed. “You’ve certainly proven that over the past year.”

The sexual fever built between the two women, their bodies beginning to thrum to the same power. Teresa’s hard nipples grew visibly beneath her taut blue shirt; Martha was bra-less, and Teresa could see the other woman’s tits hardening and swelling, her nipples growing, as their silent confrontation continued.

Martha got up from behind her desk and walked to the back of her office. She opened the door to her private bathroom, reached inside the door, and pulled out a gym mat. She carried it to the center of her office, and placed it on the floor behind where Teresa was sitting in her chair.

The girl rose to her feet and, facing Martha, locking eyes with the blonde teacher, she crossed her hands at the bottom of her tight t-shirt, then peeled the whole garment up her torso. Her massive tits rose, caught by the cloth, then fell, bouncing exuberantly, as the shirt pulled over her head. Teresa was wearing a fragile demi-bra, hardly enough to really contain and control her beautiful rack. Teresa unhooked her dress. It fell to the floor, revealing that the girl was not wearing any underwear. Martha stared appreciatively at the thick-lipped, naked slit of the girl’s throbbing cunt which, even now, glistened with moisture. A thin, well-trimmed landing strip was all the hair on Teresa’s pubes. Teresa reached up and unclipped her bra, then let it fall to the floor. Her tits bounced free. She stood naked and glorious before the teacher, their eyes burning into each other.

Martha slipped out of her sandals, then reached up and slid the spaghetti straps off of her shoulders. The dress flowed to the ground, catching briefly on her tits and hips, before forming a puddle at her feet. Martha stepped out of the pile of cloth. The teacher was completely, beautifully nude. Her vagina was also glittering with wetness, her blonde landing strip was course but well-maintained, mirroring Teresa’s genital grooming. The two women let their eyes range over the other’s body, the heat of their gazes growing in intensity.

Martha turned and opened a file drawer behind her, the place where she kept all of her office sex toys under lock. As Teresa watched, the teacher pulled two objects out of the drawer then pushed it shut. One of the implements Teresa recognized as a thick strap-on dildo; the other she could not see. Martha turned back to her.

“I’ve been giving your proposition a little more thought, Teresa,” the teacher began. “And I’ve decided that I should offer you a… counter-proposal.” Martha smiled.
“You and I take turns fucking each other with this strap-on.” She held the sex toy up. “And we time it.” She held up her other hand, revealing that she was holding a digital timer. “If you can fuck me until I come faster than I can fuck you to orgasm, then you get your shot at me – we’ll meet somewhere very soon and have another, no-holds barred fuckfight. But if I beat you tonight – if I fuck your brains out – then you agree to be my slave for the next year. No rematches.”

Teresa felt the heat in her body building and growing. She was sure that this was a bad deal. Martha wanted to fuckfight to see if they should fuckfight. And if Teresa lost, she would be giving to Martha exactly what she wanted. But Teresa also knew that she could not resist.

“I agree,” Teresa replied. She was sure that her sexual stamina was greater than Martha’s and she was confident in her sexual prowess. She knew she was taking a great risk, but it was worth it.

Martha smiled, but Teresa was sure she saw a flash of trepidation in the teacher’s face. Still, Martha nodded.

Martha strapped on the thick black cock and lubed it up with a tube from the drawer. “I’ll start. You click the timer when the dildo is in you. I’ll click it when you come.”

Teresa nodded then walked to the mat. Her heart was pounding, and her pussy was so wet that cunt juice was trickling down her thighs. Her nipples were like spikes. She settled down on the mat, lying flat on her back, and spread her luscious thighs wide. Her cunt was engorged, her naked pussy lips thick, soaking with sexual secretions, and almost pulsing with hunger. She flexed her vagina, giving Martha a show of her genital control. Her tits rocked deliciously as she settled into place.

Martha watched Teresa with a burning gaze. Then, she double-checked the office door to be sure it was locked. Earlier in the year, after she had started her sex war with Teresa, Martha had had her office door soundproofed at her own expense, with the excuse that she liked to play her stereo loudly as she worked. She planned to get her money’s worth out of the soundproofing tonight.

Martha proceeded to the mat. She kneeled between Teresa’s legs. The women’s eyes were locked and their breath was coming in hot pants of arousal. Martha leaned over and placed her hands on either side of Teresa’s shoulders. Her heavy tits hung down and slowly, carefully, she lowered her rack down on Teresa’s matching tits until she could rub nipple to nipple. The women shuddered as their ultra-sensitive nubs came into burning contact.

“Do you like that, little cunt?” Martha moaned at her foe. “Do you like my beautiful titties touching yours?”

At the same time, Martha pressed the thick, glistening head of the dildo until it pushed at Teresa’s tight, naked slit. The tip of the dildo grew damp with cunt juice as it moved around, probing at Teresa’s thickened pussy lips, sliding up and down the beckoning crevasse of her twat. The girl groaned, almost sick with lust.

“Do it, you old fuck. Shove it in all the way, fuck me good,” Teresa snarled at her hated enemy, even as she panted furiously with need. Teresa reached up and gripped Martha’s hips, trying to guide the other woman into her aching pussy.

Martha groaned, her eyes shining, then lined the thick rubber shaft up with Teresa’s glistening cunt. Bracing herself, she shoved hard with her hips and ass, ramming the shaft down, forcing Teresa’s moist cuntlips apart, and driving deep and hard into the depths of the girl’s hungry cunt. Teresa’s twat was amazingly tight, and it resisted the cock’s penetration for a moment. Martha grunted and shoved harder, the blunt side of the dildo pushing up against her own crotch, pushing at her swollen clit. The girl’s vaginal canal was so wet, the rubber shaft was so well-lubricated, that her inner tightness could not resist for long. With a cry, Martha slowly, steadily, rammed the thick shaft to its hilt, sheathing it inside of Teresa’s hot, wet, grasping cunt. Teresa screamed out in pure pleasure as the shaft plunged into her, splitting her raging cunt in two, driving all the way into her core, filling her completely. Teresa’s powerful inner cunt muscles convulsed around the slick shaft, gripping it tightly, squeezing the hard rubber like a vise. Gasping, Teresa reached out to her side and tapped the timer on. Then she wrapped her powerful thighs around Martha’s hips. She reached up and looped her arms around Martha’s back and pulled Martha’s perfect, voluptuous body down onto her own. “Come and fuck me, you pussylicker,” Teresa moaned.

Martha worked her hips and her ass, grinding the base of the dildo into Teresa’s swollen clit, even as the thick rubber shaft worked around and around inside Teresa’s hot, tight vagina. Martha felt the pressure from the dildo on her own pussy. The contraption was strapped in just the right place on her body to push back at the crown of her cunt. But she knew that she was still not getting it as badly as Teresa. Teresa wrapped her arms and legs around Martha’s bucking, grinding body. She bucked up to meet the teacher’s downward thrusts. She spread her hands on Martha’s driving ass and pulled the teacher into her with all her strength. Martha pushed herself forward, pushing all the weight of her body onto her pulsing tits, and reached around and down to grab and fill her hands with Teresa’s pumping ass. Their hard bellies slapped together. Both women groaned with joy as their massive tits crushed and nipples grated against each other, as their chests mashed and throbbed and burned with heat and arousal, as they smeared and rubbed their meaty tits into one. They panted and gasped into each other’s faces, nose to nose, their hair thrashing and tangling. They pressed cheek to cheek and moaned and gasped and screamed together.

“You fucker, oh god, you dirty fucker…!!!” Teresa gasped at her assailant.

“Take it, you little slut, take it hard!!” Martha groaned back, as she pumped the dildo back and forth, up and down, ravaging Teresa’s cunt as hard as she could, determined to drive the shaft all the way through Teresa’s cunt, to master the girl completely. At the same time, she made sure that she kept constant pressure on the girl’s clit, attacking her enemy’s most vulnerable and delicious spot with all of her strength. The women locked into a long, biting, sucking kiss, driving their tongues at each other, raping each other’s mouths even as they pumped and bucked and writhed furiously in each other’s arms, grinding their naked bodies together as hard as they could.

The women continued to gasp and grunt as they fucked. Teresa shoved two fingers up Martha’s asshole, then reached slightly further down and began probing the teacher’s labia. Martha pumped harder. The room filled with moans and pants of two bitches in heat. Martha’s body was suffused with pleasure and arousal, her breasts burned with the delicious friction of the tit to tit, nipple to nipple struggle with Teresa’s massive jugs, but the teacher was far from an orgasm. Her clit, despite being under pressure from the dildo’s base, was still not being directly stimulated. Teresa, on the other hand, was groaning and sobbing with pleasure, her body racked with incredible sensations of ecstasy. Her swollen clit was under continuous attack, being rubbed by the burning dildo shaft, being pressed and stroked by the strap-on’s base, even being stimulated by Martha’s probing, seeking fingers as the teacher attacked her cunt from behind by reaching around. The women gasped into each other’s faces, then locked again into biting, licking, sucking kisses. Their tongues tangled and struggled, their spit combined and overflowed from their locked mouths. Panting, they pulled their mouths apart, swallowing back the shared saliva. They both needed their breath too much to kiss, but they pushed their faces together, nose to nose, their tongues pressed tight, their hot breath blasting into each other, and continued to fuck harder and harder, Martha desperate to stimulate Teresa beyond her endurance, to push her over the edge. Teresa resisted, sobbing and groaning, screaming in frustration and desperation as she fought to hold out, to keep her oversexed body from exploding in orgasmic release. She was being fucked out of her mind and she absolutely loved it, but she had to fight against giving into her pleasure. She had to win this conflict, she had to hold out as long as she could.

The women struggled, Martha fucking Teresa viciously, expertly, working her enemy’s twat with all of her strength and skill, ramming the dong deep, deep into the girl’s cunt, using it to work Teresa’s most sensitive spots. The fucking went on and on and on, Teresa screaming, sobbing and shaking with pleasure, but still somehow resisting her orgasm. Martha panted and gasped with effort and lust. “How long can this bitch hold out?” Martha thought to herself.

Finally, after what seemed an eternity of writhing and grinding, Teresa couldn’t take anymore; her cunt was pulsing with pleasure, her clit was burning with heat, her tits were exploding with delicious sexual tension, her entire body was dipped in liquid fire. The room was filled with the smells of overflowing pussy, of woman sweat, with the groans and gasps of two bitches fucking, with the slaps of their bellies as they clapped together, with the silken whisper of taut, slick flesh sliding on voluptuous flesh.

“God, oh God,” Teresa shrieked. “Oh God, I’m commminnngg….!!! Fuck, FUCK, FUCK!!!” Gasping, Martha managed to hit the button on the timer.

Teresa bucked high, and arched her back, squeezing Martha’s fantastic body between her locked thighs, clawing at the teacher’s round, firm ass, pulling Martha as deep into her exploding cunt as she could. A hard, hot gush of cum blasted from her twat, soaking the dildo, drenching the intersection of the women’s bodies. They spread the hot liquid around and around their smooth crotches as they writhed. Even as Teresa bucked, riding out the orgasms rippling through her body, Martha kept thrusting, seeking to pull every scrap of sexual energy out of Teresa that she could. Their bodies locked in this orgasmic struggle. The sound of their hard bodies slapping, slamming together, continued to reverberate in the room.

Finally, the women collapsed in a heap, panting and heaving, clinging to each other, slicked in sweat and cunt juice. Martha’s pussy was burning with unrelieved sexual tension, but not enough to cause her real discomfort. She focused on pushing those feelings back; the last thing she needed was to be fucked by Teresa when she was already on the verge of coming. But she realized now that she was going to start this fight at a disadvantage; it probably would have been better for her if she had been on the receiving end of the dildo fuck first. Well, she could not change that and would just have to work with the circumstances.

Panting, soaked with sweat, Martha pulled herself off of Teresa, pulling the rubber dong out of the teen’s pussy with a wet pop and a gush of juice. Martha looked at the timer.

“23:20,” the teacher said, somewhat perturbed. That was a long time. “You did very well, cunt,” Martha admitted, grudgingly. She was concerned. It was going to be hard for her to hold out that long.

“Yeah, I did well, you fat sow,” Teresa taunted. “And now it’s my turn. I’m going to ream your fat, floppy cunt inside out.”

Martha said nothing. She reset the timer and placed it beside the mat, which was now slicked with their juices. Martha unsnapped the belt supporting her strap-on dildo and handed the dripping wet implement to Teresa. In a flash, Teresa had the belt around her waist, the dong positioned directly over her cunt.

“I’m going to fuck this thing out your ass, you little bitch,” Teresa growled at Martha.

Martha’s pussy was dripping with juices, her nipples were as hard as small stones, and her tits were swollen with arousal and burned with sensitivity. She rolled onto her back on the mat and spread her magnificent legs wide. Her pink gash presented itself, wide and wet, glistening with juices, her cuntlips flexing with hunger and need.

“Come and get me, you fucking baby slut,” Martha breathed.

Teresa kneeled between Martha’s spread legs and reached down, filling her eager hands with the teacher’s magnificent tits. She squeezed, rubbing the rock-hard nipples between her thumbs and forefingers, sinking her fingers into the dense flesh, enjoying the weight and heat of Martha’s fantastic jugs. She bent over and sucked hard at Martha’s left tit, drawing in the nipple, then filling her mouth with as much of the delicious tit as she could, biting and sucking hard. Martha pulled at Teresa’s hair, trying to get the girl to back off, even as she groaned and writhed in pleasure under Teresa’s ministrations. “Stop, stop you little shit, this isn’t fair,” Martha gasped.

“It’s not against the rules, either, you fat cunt,” Teresa snarled. She bit Martha’s nipple hard, eliciting a short scream, then quickly positioned the dildo, aiming it directly at Martha’s hot, tight, wet slit. She pushed the head of the shaft, still drenched with her juices, into the soft cleft of the teacher’s cunt. Then, gathering herself, Teresa shoved hard with her ass and hips, and strove to drive the dong all the way to its hilt into the teacher’s steaming body. The thick shaft penetrated Martha to the core, slowly sliding into her tight, wet vaginal corridor like a sleek knife. She was already deeply aroused and fully lubricated. Combined with the lube and Teresa’s juices on the dong, the dildo bisected Martha’s cunt with a single, powerful thrust, splitting her in two. It filled her to overflowing, ramming deep into her core, and she choked out a shriek of raw pleasure.

“FUCK!! Oh, Fuck, God, yesss!!” Martha howled.

Teresa seized Martha’s hands and, intertwining their fingers, she pushed the teacher’s hands to the floor, on either side of her body. Teresa threw herself down onto Martha’s voluptuous body, crushing her tits into Martha’s equally massive jugs. The women writhed against each other, wriggling and rubbing and grinding their bodies together furiously. Martha locked her thighs around Teresa’s hips, then slipped her legs down, twining them with Teresa’s, straining muscle to muscle. Teresa started pumping, fucking Martha hard. She spat in the teacher’s face, then licked up the spittle. Martha’s tongue lashed out to meet Teresa’s and the women bit and sucked at each other before sealing into a spit-filled, snarling, tongue-twisting kiss. They swallowed each other’s groans and cries of joy and hate, along with their mixed saliva.

As she pumped, Teresa felt the pressure of the dong’s base on her still-thickened clit, and she knew she had to be careful. If she ended up having another orgasm (or multiple orgasms) before she forced Martha to climax, she might end up too weakened to really win the battle. But she was confident; Martha had put herself into a bad spot, almost (Teresa hoped) as if she wanted to lose.

Face to face, eye to eye, nose to nose, mouth to mouth, exchanging hot pants and hungry tongues, lapping at each other, the two women continued fucking, grinding their voluptuous bodies together furiously, struggling to merge into one steaming sexual flesh. Teresa worked the dong deep in Martha’s cunt, using her extensive sexual knowledge of the teacher’s body to try to angle the shaft in ways that would caress and stimulate the older woman’s most sensitive internal pleasure spots. At the same time, the thick shaft rubbed furiously at the underside of Martha’s swollen clit, and the base of the dildo pressed into her clit’s head, sending shockwaves of raw pleasure rippling through the blonde beauty in waves.

Martha squeezed Teresa’s voluptuous body between her powerful thighs. She tightened her pussy’s hold on the thrusting, grinding dong and tried to control the shaft as much as she could, struggling to keep it from her most sensitive spots, trying to control and reduce the pace of the delicious thrusting, anything just to buy herself more time. Martha and Teresa pressed cheek to cheek, gasping furiously, still licking at each other, exchanging vicious curses as they fucked, their hands struggling and squeezing each other to the point of pain.

“You fuck, you dirty little fuck…,” Martha moaned. Her voice was coming now in pants and sobs of sheer pleasure, her body was vibrating with the erotic power pulsing out of her over stimulated clit, filling every cell of her body with raw ecstasy.

“You whore, you cunt, you fucking cow…,” Teresa chanted as she struggled to control Martha, as her tits burned with the friction of their nipple to nipple grinding with Martha’s rack, as she pumped the dong harder and more savagely. Her clit trickled with unreleased sexual force, but it was still far from exploding.

Their hands wet with sweat, Martha twisted her wrists and freed her hands from Teresa’s grip. She reached around Teresa’s hips and seized the girl’s pumping ass and pulled Teresa down into her hungry cunt even harder. She enjoyed the feel of Teresa’s hard ass rippling and flexing beneath her spread palms. Teresa used her free right hand to pull viciously at Martha’s lush blonde hair; her left hand moved down the teacher’s body, grabbing the other woman’s right buttock. Martha raised one hand from Teresa’s pumping ass to return the painful hair pull. The women exchanged snarls of hate and pain as they yanked violently at the other’s thick locks.

Teresa forced her hungry tongue into Martha’s mouth. The women sucked at each other’s tongues viciously for several seconds, tangling them and mixing their spit, until their gasps forced their ravenous mouths apart.

On and on and on it went, the women’s bodies slapping and grinding, the room filling with Martha’s increasingly loud groans and moans as her body was fucked past the breaking point. She trembled with erotic tension, her pussy was so wet that its juices drenched the women’s lower torsos. The massive dick slid in and out, in and out of her thick, swollen cunt like a slow, steady piston, Teresa riding Martha mercilessly.
The student grunted and gasped with the force of her effort. Her body was soaked with the combined sweat and pussy juice of herself and her enemy. Teresa was locked in a sexual frenzy with the teacher. Her clit was not getting a quarter of the stimulation of Martha’s sexhorn, but it was still enough to send irresistible pulses of sexual joy rippling through her womanly flesh, filling her with the need for sexual satisfaction.

Teresa was fucking Martha out of her mind. The teacher’s head was thrown back, her eyes were shut tight, and her teeth were gritted, except when she could not help but gasp or scream in joy. Her beautiful face wore an undeniable expression of sexual agony. Her moans and screams and animal cries of unbearable pleasure grew more and more intense. Yet, still, she refused to break. Somehow, Martha was holding out against the unbelievable pleasure being inflicted on her body.

After what seemed an eternity of sexual struggle, Teresa glanced at the digital timer and was amazed and horrified to see that she had been viciously fucking Martha for 20 minutes and 30 seconds. She had less than 3 minutes in which to break this whore, in which to force Martha to orgasm. Otherwise, she would lose and she would never have her chance at redemption.

Teresa redoubled her efforts. Martha had been using her inner vaginal muscles to try to affect the pumping thrusts of the massive dildo, wrestling with Teresa for control of the shaft, despite her disadvantageous position. Teresa used her powerful hips and ass muscles to wrest complete control of the rubber dong from Martha. She began pumping the teacher harder, faster and to her full depth, thrusting the dong like a sexual knife, stabbing deep into Martha’s core. At the same time, she drove her face down on to Martha’s beautiful face, forcing the other woman’s mouth open and attacking with her tongue yet again. Martha fought back gamely, but Teresa could feel the erotic trembling in her enemy’s body and knew that Martha had to be on the verge of coming. She just needed to push the teacher over the edge.

Martha drove two fingers deep into Teresa’s asshole. Teresa immediately reciprocated the move and rammed her fingers into Martha’s ass even as she pumped the teacher’s pussy, hoping the extra stimulation would be too much for the other woman. Martha’s sobs grew more intense, but she still did not explode in sexual surrender. After a moment, Teresa took her right hand, worked it up their writhing bodies to their chests. Their tits were crushed tight, mashed together into a single meaty mass of rolling, grinding sexual ecstasy. Teresa pulled herself up just slightly, then slipped her right hand over Martha’s tit, crushing her hand between their massive tits. Teresa rubbed the teacher’s engorged nipple with her palm, tweaking and squeezing the enflamed sex organ with all of her skill. She continued to pump Martha’s ass, work Martha’s tongue, and drill the teacher’s hungry twat with the massive cock. Teresa broke the savage kiss in a spray of spit, then glanced at the timer. It now said 22:10.

Pressed cheek to cheek, the women struggled. Martha could not speak. Her face was a mask of agony and incredible pleasure.

“Give, you whore, give, you stupid dumb fuck, give, give, GIVE!!,” Teresa snarled, her words working up to a scream of rage and desperation, her ass and hips humping frantically, furiously, her efforts at stimulating Martha growing ever more intense. She had to beat this whore, she had to! But the clock was running down, she was almost out of time…

“Fuck, Fuck, FUUUUCCCCKKK!!!,” Martha suddenly screamed. “Oh Fuck, I’m cooommmming! Oh GOD!!”

Teresa slapped the timer in relief. The digital readout said 23:09.

Martha clapped her hands to Teresa’s ass, spread her legs wide, and writhed furiously, in absolute ecstasy, beneath her attacker, pulling Teresa down to her and grinding her own body up, seeking to force every drop of raw pleasure out of her exploding cunt as she could. Teresa continued to pump and grind the dong deep into every inch of Martha’s tight pussy. Martha’s twat gushed with juice, her body arched and pounded against the mat. One delicious orgasm after another rippled out of her core, and she enjoyed each explosion of ecstasy as she howled incoherently, lost in sexual ecstasy.

The exhausted women lay together in each other’s arms, panting and spent, for several minutes after Martha’s final orgasm. They lay cheek to cheek, their wet hair tangled, their limbs twined, their arms wrapped around each other. Their heavy tits were squashed tight, thick nipples twisted together. Teresa raised and turned her head to look down at Martha; Martha turned her head to meet Teresa’s gaze. Nose to nose, eye to eye, the women glared at each other hatefully. They licked each other’s lips and tongues, then slid their tongues together for a long, deep, luscious, spit-filled kiss. Finally, they broke the kiss.

“You lost, whore,” Teresa murmured at her foe.

“Just barely, cunt,” Martha replied. “But still, you’ve earned your rematch.”

Teresa smiled, joy, hate and pure lust flashing across her beautiful face in rapid succession.

Martha continued. “Come to my house on Friday night, at 7. We’ll finish this off then.”

Teresa smiled in triumph. Sexual heat still burned in her body, her arousal from the constant stimulation of the dong still not satisfied. But she pulled her body off of Martha’s luscious form, the thick dildo shaft pulling out of Martha’s hot pussy with a pop, a heavy splatter of cunt juice accompanying the withdrawal. Teresa rolled on her side, next to Martha, and the two beauties lay there for a short time, regaining their strength. The sexual itch between the legs of both women continued to grow and, slowly, Teresa and Martha came to the realization that the evening was not done yet. They may have decided the state of their bet, but their insatiable bodies demanded more sexual battle.

Teresa unstrapped the dildo and raised her hips as she pulled off the contraption. She put it aside and then placed her hand on her hot cunt. Her thick clit began to harden as her fingers probed her soft, wet labia. Beside her, Martha reached up and filled her right hand with her own tit, and began to knead the taut breast flesh. Martha’s left hand drifted down between her legs and began to stroke her clit. Her sexhorn hardened almost instantly. The women turned their heads to each other and began to share hot breath as they masturbated themselves, readying their bodies for another round of intense sexual warfare.

Suddenly, there was a muffled knock at Martha’s office door. Both women’s eyes widened with the shock. There was the sound of someone trying the doorknob. Instantly, Martha was on her feet, grabbing her one-piece dress and pulling it over her head, whipping it down her voluptuous body, the spaghetti straps falling into place, her powerful tits thrusting against the thin material. Smoothing her tangled hair with her fingers, she made her way to the door. “I’m coming,” she called out, knowing that the person on the other side of the door might not be able to hear her. Behind her, Teresa scrambled, finding her tight blouse and pulling it down over her heavy, bulging tits, then reaching for her skirt.

There was the sound of a key turning in the lock. Teresa did not have time to put on the skirt. She threw herself into the chair in front of Martha’s desk and draped the skirt over her legs, hoping it looked like she was wearing it. Martha reached the door just as it opened.

The elderly janitor was in the corridor. He was putting his key away as Martha caught the door, so he had not gotten a good view of the inside of the office. He had not even noticed that Martha was at the door.

“Mr. Kent,” the teacher said, startling him. Martha smiled at the old man. “I’m afraid I’m meeting a student right now. Would you mind not cleaning my office tonight?”

“Oh, Ms. Wells,” the janitor said. He tried to look past Martha into the office, and noted the young woman sitting in the chair. “I didn’t know you were here. I’m sorry for bothering you. Yes, I’ll leave your office for tonight.”

Martha hoped that the man would not notice the damp spots being formed by her wet nipples in the thin cloth of her dress. Her body was sweaty and her hair was a mess. The smell in the room was that of hot sex. Mr. Kent was a man and, as such, inclined to miss obvious clues, but if he put everything together, he might start spreading rumors about her. Martha was proud that she had been fucking Teresa all year with no one (outside of Grant and Cynthia) knowing what was going on.

She thanked the janitor and closed the door behind him. She turned with her back to the door and let out a sigh of relief. That had been close. If the man had come in while she and Teresa had been fucking each other with the dildo, there would have been no way to cover this up.

Teresa rose from the chair, her skirt now fastened around her hips, her hands on her broad hips, and smiled viciously. Her nipples were stabbing into the tight cloth of her blouse, outlined by the damp spots which were increasing in size and wetness even as Martha watched.

“You had better be more careful, Martha,” Teresa hissed. “Your career could be over pretty fast if word gets out that you’re fucking your students.”

“Shut up, you slutty cunt,” Martha snapped. Heat flared between her legs with incredible intensity and her nipples suddenly swelled up to almost pierce her tight dress. Martha reached for Teresa’s hair and grabbed two handfuls of the girl’s thick, wet black locks; Teresa instantly filled both her hands with Martha’s blonde hair. The women pressed together tit to tit, groaning with pleasure as their enflamed, engorged nipples crushed into each other through their thin clothing. Heavy tits crushed tight and their breasts overflowed from their deep collars, sweaty bare breast flesh pushing and throbbing. The women pulled viciously at each other’s hair, holding each other’s savage faces only inches apart. They smiled, savage grins of hate and pure lust. Their bare feet flashed and their legs, also bare beneath their long skirts, lashed out as they tried to trip each other.

Already, Teresa felt the tightness build between her legs, felt her thick clit harden into a rock-like shaft of sexual flesh.

“I’m going to fuck your cunt out, Martha,” Teresa whispered intensely to the teacher, as they pressed nose to nose. “My clit is going to squash your little nub like the soft little weak thing it is.”

“Girl,” Martha breathed, “I’m going to ride your little cunt until it dries up.”

Martha flicked her hard nipples against Teresa’s matching nubs, assaulting the girl through the double-layer of their tops. Teresa gasped, then thrust back. The women struggled, pulling each other around the small space in front of the desk by their hair, their bare legs twisting and tangling under their long, flowing skirts. Teresa succeeded in tripping Martha, but the teacher did not fall. She staggered back, pushing Teresa away, then caught herself on the wall of her office. With a growl, Martha dropped to the floor, onto her ass. She pulled her dress up, exposing her hungry cunt and her naked legs. In an instant, unable to resist even for a moment, Teresa dropped to the floor to join Martha. She also pulled back her skirt, exposing herself, and slid along the floor until she scissored Martha’s body with her own. Their bare, muscled legs slid over each other. Both women reached between their thighs and used their fingers to spread and open their boiling cunts. Huge, engorged clits pulsed with erotic energy and rose to challenge each other. Then, panting like runners in a marathon, almost overcome with raw lust, Martha and Teresa slipped together, interlocking like clothespins, their wet, thick cuntlips slapping and kissing with a moist “thwack”, followed by the squelching sounds of wet, yielding flesh sucking and sealing as the women jerked their hips and asses and rammed their genitals into one mass of sexual ecstasy.

Their hard, throbbing clits crossed and crushed, the heads of their clits – unbearably, exquisitely sensitive – squashed and merged and fused into one. Martha screamed, shrieking with raw pleasure; Teresa howled in pleasure. The women’s cries harmonized and became one. Then, grunting and groaning in unison, each cry in time to their bucking hips and thrusting asses, they began to clit-fuck each other with wild abandon.

Martha and Teresa let their skirts fall over their battling legs. Each grabbed the thigh of the other, braced herself with her free hand, and commenced to fuck and fuck and fuck. Their clits fenced and struggled and fused, locked together in the ultimate erotic competition. Martha and Teresa looked into each other’s delirious eyes and smiled in mutual understanding. As much as both women had enjoyed ravaging the other with the dildo, both also shared a common understanding that the only true way to settle a woman to woman sexual rivalry was to meet naked clit to naked clit, to fuck and fence and drive their ultimate sexual weapons together until only one woman emerged victorious. This was also the most delicious and satisfying way to engage sexual combat.

Still bracing her bucking body up with her right hand, Martha reached out and slipped her left hand inside of Teresa’s tight blue blouse. The girl’s tits were bouncing exuberantly with each thrust of her ass, her nipples had imprinted a tattoo into the tight cloth. Martha squeezed Teresa’s enflamed right nipple hard, then squeezed and massaged the rest of the massive tit. She wished she could eat and suck that supple, taut flesh. Teresa groaned, closing her eyes in ecstasy, then reached out and slipped her hand into Martha’s dress, filling her hand with the teacher’s right tit. She squeezed back, forcing a groan of pleasure from her foe.

The women fucked and fucked, their heads thrown back in ecstasy, their teeth gritted in passion, their bodies locked and rocking, driving into each other in a fantastic rhythm. Their clits seemed to swell to unbelievable proportions, twisting and knotting into one, causing Martha and Teresa to sob and cry and scream in unbearable pleasure as they fucked each other higher and higher up the pleasure curve, groping and kneading each other’s tits as they drove each other to the end.

It was Teresa who finally came first. Screaming in an absolute agony of sexual bliss, her overwhelmed clit finally suffered one excruciating stroke too many and she climaxed in a convulsive spray of come. She fell onto her back and writhed furiously, driving her pussy as deep into Martha’s as she could, ramming her clit into Martha’s rock-hard sexhorn with all of her strength, desperate to evoke every orgasm that she could. Martha came moments later, screeching with pleasure, falling onto her back and joining Teresa to become one long, writhing mass of sexual power. The women ground together mercilessly, fucking each other senseless, forcing delicious orgasm after orgasm from each other until, finally, they could take no more.

For some time, they lay that way, their bodies interlocked, their clits pulsing as one, sprawled away from each other. Teresa’s blue blouse was soaked in sweat. Her skirt was wet too, sporting a large and growing wet spot on the part still on the floor. Martha’s dress was also soaked with sweat and cum.

After a few minutes, Martha pushed herself up to a sitting position, then slowly disengaged her pussy from Teresa’s hot fuckmeat. For a moment, Martha stared down at the beautiful girl spread before her. Then, she got to her knees and pulled the dress up over her head, throwing it away in the corner of the room. She was nude, once again.

Teresa smiled. She sat up, then peeled her wet blouse over her head and tossed it aside. Her magnificent tits bounced lustily. She unclipped her skirt and tossed it aside. Then, she spread her naked legs and presented her wet, hot pussy to her enemy. She stroked her cunt, spreading the thick, juicy lips, opening her sex gash, stirring her slowly shrinking clit back to life.

Martha groaned, her eyes already glazed with lust. She sat down on her ass and spread her legs, opening her twat to Teresa’s hungry gaze. The women’s eyes locked and they smiled at each other.

“The best out of five,” Martha whispered. “Do you think your little clit can last that long, jizz-whore?”

“Let’s find out, you fat old cunt,” Teresa grunted back in reply.

The women pushed up to each other, locking into another scissors, pausing just before their hot, hungry fuckmeat could meet and begin the process of devouring each other once more. They looked deep into each other, seeing their mutual lust and need to conquer and possess the other mirrored in their foe.

Then, they came together, cunt to cunt, clit to clit, and, with a flash of incredible pleasure, began to fuck each other into oblivion.

To be continued: