FSE

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Time seemed to stand still as Gabe stared at the wooden walls of his unexpected prison. He had no way to tell the passage of time, save a beam of light that slowly adjusted angles through a crack in the barn ceiling. Though it couldn't have been more than a few hours, it seemed like years since they were thrust into this stinking prison. There was little left to do save contemplate the horrific fate they were to experience.

Gabe watched as Jason scratched furiously at his wrists, skin red and raw where the fur had not started to grow yet. More alarming than his aggressive actions were the areas across his skin covered in a mix of black and white hairs that were clearly inhuman. Gabe, too, had sprouted a few patches of brown fur along his arms. Both men were stark naked; Gabe could clearly see the extent of the changes to him and his best friend, even those they'd both prefer keeping covered. Their only garments were a thick iron chain that bolted both men to the floor.

The bizarre-looking beast at the other side of the barn was a clue to their eventual fates. Her as of yet too small muzzle and underdeveloped musculature was the only indication she had ever been human. She was more docile now; when they'd been brought in, she reared and kicked at the gates of her pen, a final act of defiance against her captors. Now she stood and ate, unable to resist the needs of her growing body. Reflexively, her tail lifted, and several large dollops of horse manure fell out, adding to the already prevalent stench in the barn.

The barn reeked of animal shit, amplified by the heat in the midsummer afternoon air. Gabe's skin was practically crawling with horseflies, the only creatures attracted by the stench. He and Jason seemed doomed to live in this stinking hell, well on their way to becoming simple farm beasts.

Even in the short amount of time they'd been here, they had changed so much already. Jason's hair had grown thick and shaggy, falling over his eye as his ears grew pointed and started crawling up his head. His nostrils flared, face feeling oddly puffy. His tailbone poked out slightly, and although Gabe tried not to look, his cock had also begun to shift, growing larger and darker. Gabe knew similar changes had happened to himself, but it was hard for him to see without a mirror.

In those first few hours, they fought, yelling and screaming as they pulled in vain at their chains. But as their changes began to overtake them in the summer heat, it became evident there was little they could do to avoid their fate as they sat in silence. Jason still tugged at the chain bolting him to the floor, trying desperately to get it to budge just an inch, but eventually gave up with a sigh. He'd already tried for hours, and nothing had changed. It was clearly no use, and, by this point, he was exhausted. He wanted to scream, but his throat was already raw from all the yelling he and Gabe had done before. Besides, when he did, the stench of the horse's waste filled his nose and made him gag. He hated the smell.

Jason couldn't stop scratching at his wrists. His skin itched all over, and he knew it was fur pushing its way out. His muscles ached all over, too, and seemed bigger than they had been before. An ache in his spine made him reach back to touch the new nub he had sprouted, and to his dismay, he found it was longer, with long hairs growing down its length. He tried burying his face in his hands to avoid looking at the horrific changes. That didn't help as he felt his jaw slowly pushing forward at his touch.

Jason looked over at Gabe and saw similar changes. His ears had pointed and moved up his head as his hair slowly grew longer, reaching down to his pecs. His face was distorted too, his nose flared and jaw pushed out slightly. Thick brown hairs were growing all over his chest and arms, and his feet seemed to be misshapen, clearly longer than they had been. He avoided looking at Gabe's cock, but he assumed it had changed like his own. Jason's balls had swollen larger, and dark patches had appeared on his cock. It was longer and thicker than normal, just another sign they were turning into horses.

"Fuck... this can't be happening... we've gotta find some way out of this Gabe... there's gotta be something we haven't tried."

"I don't know Jason, I don't... fuck..." Gabe's voice trailed off as tears ran down his cheek. A few hours ago he had no idea such changes were even possible, but now it seemed he would soon have to cope with the reality that he and his friend would spend the rest of their days as horses. Tied up in a cramped barn, standing in piles of piss and shit, flies irritating their sweaty hides. It was almost impossible to comprehend.

A loud creak drew the boys' attention to the outside door opening. A woman's chuckling was followed steadily behind by the clopping of the horse's hooves. Gabe craned his head to look; the woman was the one who had injected them, retaining that look of cold indifference to the notion of the lives she'd destroyed. She regarded the boys with curiosity, taking in their latest changes.

"Hmm... not too far along," she muttered as she returned her attention to her charge, a dapple gray stallion who now snorted and sniffed the air, stamping his hooves in frustration.

"There, there. You'll get your chance soon," said the woman as she patted the former man's head. She opened the door adjacent to them, exposing the swollen hindquarters of the soon-to-be mare within. The mare, for her part, whickered and panted in frustration, but the way her hips buckled and her tail raised betrayed her desires.

"You'll have to forgive your suitor. You'll be his first mare since he completed his changes, so he might be a little inexperienced. Though I see you're more than eager to take your first stallion," the woman smirked.

The mare grunted in frustration, her swollen sex pulsing as the stallion blew a breath of warm air over her nethers. She hitched her tail to the side, letting out a reflexive stream of urine, nearly hitting the stallion in the nose as he whickered and snorted in frustration.

"Claim your mare Ben, she's waiting for you," the woman whispered as she unclasped the stallion's bridle. In a fluid motion, the horse formerly known as Ben reared up and tried to spear the mare with his taut horse cock. The mare, feeling his weight, hitched her tail, pushing back against his inexperienced shaft. She nickered and whinnied as her sex was pierced by the eager male, both beasts quivering with sensation.

Both Gabe and Jason watched in horror and fascination as the mare's body began to crack and groan, muscles rippling under her skin as she began to grow larger. Her face continued to look all the more equine with each passing moment as the two beasts rutted. It seemed as though sexual activity was the cause of further change, as though the mating might make her body entirely into that of a horse.

Gabe was stunned to feel a stirring in his crotch from the display. Embarrassed, he put his hands over his swelling cock, hoping Jason wouldn't see. What had those fuckers done to him?! He could readily detect the rank scent of equine musk in the air, the scent of sweat and sex making him more excited. He resisted the urge to look, to touch himself, though his member ached and leaked from the sights and scents he was experiencing.

Jason, too, watched in disgust as the two beasts fucked in the pen across from their prison. He wanted to look away but was transfixed by the sight as the mare's body cracked and shifted, slowly changing as she became fully a horse. The scent of sex from their breeding hit his nose, and he looked away, though finding himself breathing it deeply instinctively. Jason's face burned bright red as he felt his cock getting harder. The sight of the two horses breeding caused his shaft to swell with each whinny and whicker. He bit his lip and covered his crotch with his hands, trying to hide his erection from Gabe as he felt his cock pushing past his fingers. Why was this making him hard!? This was horrible, disgusting, fucking depraved! But it was turning him on somehow. It must have had something to do with the changes, and he resented it.

After a few moments, the stallion dismounted, several large clumps of semen falling to the floor as the mare swished her tail in satisfaction. The woman smiled, leading the still-erect stallion out of the barn. Gabe couldn't help but look at his cock, the massive mottled flesh, and swaying balls as the stallion was lead passed. The woman gave them a knowing look as she walked away.

Jason remained turned away from Gabe, desperately willing his erection to go down before Gabe saw it, but his arousal just wouldn't subside. His cock remained hard as the images of the horses breeding played over and over in his head, making his cock twitch. He shouldn't be hard at a time like this, he couldn't! But he couldn't deny how horny he was. Finally, Jason looked down at his member and saw how much thicker and longer it had become, the tip starting to flare out strangely as a stream of pre leaked down his length. He had to will this erection down before it changed even more!

Meanwhile, Gabe felt his nostrils flare, unintentionally drinking in the scents of sweat and musk in the barn. His hands were over his cock, but he knew that Jason could smell his leaking tool as much as Gabe could smell Jason's own. He felt it leak all over his hand and the tip flare from his touch. A part of him even wished he was closer to the changed mare...

"Arrrggg!" Gabe moaned, not realizing he'd been subconsciously humping his open palm, desperate for release. He quickly pulled his hand away, letting his massive darkening cock bob up and down in full view of his friend. He knew he should be embarrassed, but he was so damn horny! He couldn't help it, the equine pheromones that hung heavily in the barn were obviously a huge turn-on to his changing physiology.

He looked down at his cock, seeing the flared tip becoming mushroom-shaped and looking so much like the stallion's tool. He wanted to touch it, to relieve the pressure welling up in his blackening balls. He couldn't, could he? Not in front of his friend. He knew they would soon be horses, would have to watch each other piss and shit and fuck with no modesty, but that didn't mean he should just jerk himself off right now, did it?

To his disdain, the sexual arousal seemed to be fueling further change as he felt his tailbone ache as though it was continuing to grow. He brushed his hand over his cock tip once more, shuddering as the contact dulled the pain of the other changes for a brief moment. Maybe if he touched himself a bit more...

The scent of Gabe's leaking member hit Jason's nose with full force. His nostrils flared again as he breathed it in, making his cock throb. Before he could stop himself, Jason looked over, seeing Gabe's massive cock bobbing up and down. The sight sent a surge through his own cock, and another stream of pre spurted out. Jason looked away quickly in embarrassment, face burning.

'Why did that make me so horny!? I don't like cock, and I'm certainly not attracted to guys! Fuck... what's wrong with me...?' Jason thought. He felt his legs start to ache again like they were growing more as cock kept insistently throbbing. It just wouldn't go down!

Jason held out for as long as he could, but the aching in his cock and something changing in his mind kept pushing him to touch himself. Finally, when he just couldn't resist anymore, he grabbed the base of his cock gently. Even that soft touch sent a wave of pleasure through him, his cock much more sensitive than before. Jason stroked his cock slowly, trembling slightly in pleasure as the feeling started to drown out the pain of change and scents around him. As he touched himself ever so slowly, he could see the tip of his member flaring out as his cock grew larger and thicker, a ring forming around the middle as his balls started to visibly swell. Yet, the feeling was so sublime, making him forget for a moment that he was becoming a horse. His balls sprouted white fur that spread up his belly, and down his thighs, the touch a catalyst for further change. And, all the while, his thoughts turned from the mare, the scent of the stallion in the pen with him more pungent and arousing to his changing sensibilities.

'It would be so nice to rub this massive member against Gabe's... and maybe feel Gabe's flared tip push slowly into his ass- Jesus what am I thinking!' Jason thought as he jerked his hand away from his cock. He wasn't gay! He didn't want Gabe's cock! And he shouldn't be touching himself at a time like this! They were trapped in a barn with stinking barn animals, slowly becoming just like them.

Jason looked over and saw Gabe watching him, and his face burned bright red. "Agh fuck... I'm sorry Gabe, I just forgot myself for a moment... I couldn't resist. Whatever these fuckers did to us, it's making me so horny... and it's terrible! We shouldn't be horny... not here like this..."

"No... we can't..." Gabe moaned, feeling his cock throb and pulse under his touch. His stomach itched as it became bloated, though not nearly enough to hide the massive horse cock he had grown from his crotch. It was already so much larger than his cock was as a human being. Yet it still paled in comparison to the stallion's own tool he'd seen moments ago.

Shuddering, Gabe recalled the mare, how much faster she'd changed after being mounted, more than the entire few hours they'd been watching her. Would he change more quickly, too, if he touched himself? He found himself wondering if he should bother resisting at all. He'd be a fucking animal either way. Why not shoot off a few loads while he still had fingers?

No. He had to resist. He had to try. Maybe there was a way he could escape and return to his human form. He couldn't give up. And yet... the sensations welling up from his cock were more than he could bear. Would it hurt so much to touch it? Maybe it would allow him to think, to calm down...

"Fuck, Jason, I'm sorry... I just really need to touch it, just a little," Gabe whined, having already lost the mental battle.

Hearing Gabe's words, Jason let out a small pant as he thought about touching himself again, stroking his now huge member. How good would it feel, pumping his massive shaft until he shot all over the barn? But he couldn't... he noticed the changes just touching himself a little had brought on. His tail was longer, his belly was more swollen, and more fur had started to spread over his body. He'd change further if he did it again... he couldn't do it. They had to escape, they couldn't just let themselves become fucking horses!

But as his cock throbbed and twitched, it became harder to resist. He had to touch it... he was just too horny, too pent up. No one could resist at a time like this! He just had to relieve the tension... just a little.

"Oooh fuck... I can't resist it either... I'm just too horny. I have to touch mine, too, it just won't stop throbbing... just don't look okay? I won't look either... and we can think about what to do when we're... done..." Jason panted, taking one last glance at Gabe before looking away and reaching down to grab his leaking member. Another shiver of pleasure went through him as he started to stroke slowly, and his cock surged hard, shooting another stream of pre.

Gabe, too, turned around, his back to Jason as he looked hungrily at his own cock. He could smell his pre edging him on, but there was something else in the air, other than the residual scents of the fully formed horses. The sweaty, musky scent coming from his friend was turning him on. But that was impossible, wasn't it? They were both becoming stallions, right? Yet it was impossible to deny the urges from the erotic equine scent wafting off his changing friend.

Gabe looked at his cock, noticing how the tip had flared and how the whole shaft had begun to darken. He noticed the beginnings of a ring around the center, one like he'd seen on the stallion's cock from earlier. It was obvious he was changing little by little, but it was so difficult to worry when... oh fuck, he couldn't think! He just needed to touch himself... just a little...

With stiff fingers, he finally grasped the thick meaty shaft, moaning from how sensitive he'd become. It seemed to grow bigger at just his simple touch, blood surging through erectile tissues even as it continued to expand towards a horse's own. Against his better inclinations, Gabe found himself wondering how much bigger it could get, maybe as big as the stallion he'd seen earlier.

Jason, meanwhile, panted as he moved his hand slowly up and down his massive member, trying not to moan from the unbelievable feeling. He didn't think his cock could get much bigger at this point, already so huge. But as he stroked himself, he could see his cock darkening in a few spots, becoming mottled as it grew slightly longer. Fuck... how big would it get? The sheer force of blood needed to supply such a mammoth member left him dizzied, though it was already hard to think through the sexual lust they were both enraptured by.

His wrists started to itch more than the rest of his arms as white fur slowly sprouted on his forearms, long and thick like a horse's fetlocks. Jason let go of his cock and whined at the sight. The more he touched his aching cock, the more it changed him. He had to stop. But once more, Gabe's scent hit his nose, sweaty and musky, like a horse... but somehow the wonderful aroma turned him on even more, even though Gabe was a guy. It didn't make any sense... why was it making him throb so much? The more Jason smelled it, the more he became unable to resist, and he finally grabbed his cock again, stroking himself faster than before. A small moan escaped his lips as shivers of pleasure flushed through his body.

Meanwhile, Gabe moaned as his cock continued to grow, pre dripping from the tip like a faucet as he pleasured his meaty length. He could smell Jason beside him, the virile stallion musk driving him wild. He had no idea why another stallion would smell so good, but it was simply too hard to deny the erotic scents wafting up from his sweaty companion.

As he rubbed his growing cock he noticed that his fingers felt oddly stiff, as though his grip was waning. He looked down in horror to see that his middle finger had begun to expand while his remaining digits were shrinking before his eyes. His nail on each middle finger had begun to expand and encompass the tip in hard keratin. They looked like hooves. He had fucking horse's hooves!

Gabe knew he had to stop, that touching himself was accelerating his changes. He was going to lose his hands, his way of interacting with the world! He didn't want this! He didn't want to be some animal, some beast unable to touch or feel, simply resting the weight of his massive bulk on his otherwise useless appendages. Yet no matter how much he tried, he couldn't stop. The sensations from his stallion rod were too erotic, too wonderful. He just needed a little more... just needed to cum a little... then he could stop. Just a little more...

Jason, meanwhile, was panting as he rubbed his cock up and down, feeling it throb and surge in his grasp as it slowly grew. The more it changed, the more intense the sensations seemed to become, and he could see more white hairs sprouting on his arms before his eyes. He noticed the stiffness in his fingers, and when he slowed his stroking to look at his hands, he saw his middle fingers had darkened, thick nails at the tip, like growing horse hooves, and his other fingers were slowly shrinking. His feet ached, and when he looked down, they had grown longer, middle toes thickening while his other toes shrank away, the same white fetlocks forming on his ankles as on his wrists.

Fuck! This couldn't be happening! He didn't want to have hooves, to not be able to hold or feel anything with his hands, to have to stand on all fours like a dumb animal for the rest of his life. Jason knew he had to stop stroking himself, it was the only way. But it just felt too good... and when the smell of Gabe's throbbing member hit his nose once again, he just couldn't stop. He stroked himself faster and faster, letting out a moan as his nose flared out further, his jaw aching as his cock shot streams of pre. His balls started to swell larger as they filled with seed, white fur slowly growing and covering them. He knew he was changing himself, but he couldn't resist it... he had to keep going... just had to cum... just had to empty these huge balls...

"No... Gotta stoppp neeeeiiigghhh!" Gabe yelled, shocked at the more equine sounds coming out of his mouth. He had changed so much already! His stiffening fingers brought a sense of urgency. His thumb was sliding slowly up his wrist, making his grip on his member precarious. If he didn't bring himself to the edge now, he'd never touch himself like a human again. He would never be able to pleasure himself, he would be a slave to the whims of his masters, only fucking when they presented him with mares, his only form of release.

The intensity of the conflict in his emotions held him at the cusp. Was it an act of submission, or defiance, to blow his final human load here and now? With the heavy equine musk in the air and the growing need in his expanding, furry balls and stretching shaft, it was clear that he no longer had a say in the matter.

"Fuck Jason, I'm sorreeey..." Gabe moaned as he felt the pressure building up in his brown-furred balls. It was almost a race, whether or not he could empty his balls before he felt his thumb slide too far down in his palm to grasp his shaft. A race to see if he could cum before his darkening nail encroached over his middle finger, till he could no longer feel. Dammit, he was changing so fast... but he was so close...

"Fuck... oh my god... hhrrrhheeeiiiggghh!" he yelled, feeling his balls churn and his shaft throb as torrents of cum shot out of his blackened member. He writhed on the floor, nearly passing out from the ecstasy. There was so much... his balls were so heavy with seed that the explosion felt like a geyser.

He slowly came down from his orgasmic high, feeling the last few tremors wracking his body. He kept his eyes closed; he knew he had to look at himself, to see what he'd done. But not yet. He wanted the post-orgasmic bliss to last as long as possible before the weight of shame from his actions crushed his spirit further

"Fff- fuck... can't stop... feeeiiiggghhls too good... have to stop..." Jason panted as he continued to stroke his darkening mottled cock. He wanted to stop, knew what would happen if he kept going, but it just felt too good. It was like his hand had a mind of its own. Whenever he willed himself to stop, his cock throbbed again and another wave of pleasure rocked his body.

As he pumped his shaft faster and faster, he could feel his grip on his cock slipping. His shaft was so thick now, and his fingers were slowly shrinking away. Did it matter though? Even if he stopped now, was there any way to reverse this? There didn't seem to be any way out, but he had to try, didn't he? But no matter how he tried to reason with himself, Jason couldn't stop. The pleasure was too great, and it pushed him on as he moaned and tried to resist whinnying. His balls churned as he felt his orgasm nearing. His jaw creaked as it stretched further, more white hairs sprouting around his flared nose as his cock spurted pre right onto his growing muzzle.

The sight of Gabe cumming was more than enough to send him over the edge in the end. "Fuck... oh fuck... I can't hold it, Gabe... I'm nneeeiiiigghhh!!" Jason whinnied as he finally reached his climax, moaning and squirming as his legs bucked, completely lost in pleasure as he shot stream after stream of musky cum from his massive member. He felt it shoot onto his chest and barely cared as it covered the floor around him, making him whiny loudly once more before his orgasm finally ended.

He collapsed, panting hard and still gripping his cock after that amazing orgasm. It was like nothing he'd ever felt before... but it meant he was even closer to being a horse. He huffed and braced himself to look down at his changes.

Gabe meanwhile was staring at his chest in horror. The black skin had encroached over his chest, bringing with it a wave of brown fur. His stomach was massive, hard as a rock with muscle. He could twitch his fucking TAIL now as he adjusted his weight away from crushing his swollen balls. His flesh was thick with sweat, even in those areas where the fur had yet to spread. He fucking REEKED of horseflesh, the smell nearly making him gag. He could see his nostrils flared in front of his face, feel his ears twitch, longer than before. Worst of all was his fingers. His thumbs were far up his wrists, which were adorned with thick grey hairs. His middle finger was more than half the width of his wrist now, and his remaining digits were less than half the length they'd been. His nail was thick and solid, stretching over the tips. He'd never touch, never feel. Never grab his dick again.

"F-fuck Jason... what do weeiiggghh do?"