FSE

Furry search engine

formerly SoFurry search engine

---

It was like a sexual fantasy come true for Cory. There he was. Locked in chastity, diapers, with his horns cut down into nubs like a little fawn. All four his limbs were tied down to the crib in which he laid with rubber mittens preventing any sort of struggle. His eyes were glazed over from the hypnotic state he was being kept in, using his diapers uncontrollably whenever he had to. A pacifier silencing the silent occasional bleating and cries for affection. His twin brother, that is. He was jealous.

Both of the boys had always been incredibly aggressive ever since their horns had grown in some years ago. It was common amongst male deer in the family. Cory had been lucky enough to make it onto the football team in the last slot, which provided him a method of venting his needs. Dan instead took out his aggression on other students, which got him expelled last year. This meant that he wouldn't be going to college in the fall like Cory. He would need to repeat the year as a 19-year-old. Legally, this was problematic for the schoolboard, so they offered him the ultimatum: undergo regression therapy to repeat the year or find another school to attend. The latter wasn't an option. The next closest school was an hour's drive away and both of their parents worked.

When Cory heard about the regression therapy to solve his brother's hormonal issues, he'd chuckled. Inwardly, he joked that mental regression was often the theme to the fetish stories he loved to secretly read. What he'd expected was some sort of motivational video or pseudoscience seminars, not this.

In the days since he was sent home from the treatment, he was tasked with changing Dan's diapers since both of the boys were simply too heavy for their smaller parents to be able to lift. It was how he knew of the chastity and had grown jealous of his brother's predicament. The poor guy wasn't even in his right headspace - attached to the collar around his neck was a vibrational audio device that apparently kept the deer in a hypnotic state while the hormones subsided naturally from his infantile state. Every time he tried to make conversation with his brother, he'd just get a vacant stare. Every once in a while, he'd make some childish bleating, but it seemed completely random.

He wanted to try out some of the gear that had been provided by the school, but he wouldn't risk it with his parents around. His mother and father had freaked out when they learned when a cousin of theirs was homosexual. They wouldn't be receptive to learning that one of their sons was a deviant. Luckily, he'd convinced them on going on their weekend trip that they were planning before they'd learned the full extent of the school's treatment for Dan.

As their car disappeared around the corner, he felt a lot of strong emotions. A bit of shame, but it also felt freeing. He'd be leaving this house in a few months. Probably for good. He'd held back on swiping his younger cousins' diapers or any other wank material that he couldn't immediately remove evidence of. But that would change once he was out in the wider world where he could share his secret interests with others. For now, he could experiment.

It was incredibly hot to be staring down at his twin brother in the crib they'd constructed. He stood naked in the room, gently rubbing at his swiftly growing erection. The brothers looked identical down to their muscle mass before Dan's horns were cut off. Seeing that deer now in that onesie with the snapped undone was strangely erotic. He could easily imagine that it was him. He wished it was. He didn't consider himself gay, but seeing someone who looked exactly like him in a predicament he wished he was in was thrilling. Reaching at his brother's soggy diaper, he felt at the chastity cage beneath. He wondered how much his brother had shrunk in the week since he'd put into that cage. He needed to know.

He hopped up on the tall crib with the keys that his parents had left him and his phone. He then began to undo his brother's wet diaper. He'd already undone most of the gear to make Dan easier to access. All that was left was the onesie and the wet diaper. The best parts, in his opinion. The smell of urine filled the air as the tapes popped off, revealing the chastity cage in all of its metallic stubby glory. For the first few days after Dan had come home, the cage had struggled to contain his girth. For one reason or another, it appeared to fit better now. Cory had heard that sometimes guys shrunk after wearing a cage for a long time, but he wondered if it had something to do with the 'regression therapy.'

With his phone, he took a photo of how the chastity cage was situated on Dan. One, because he needed to make sure he could put it back on and two because he wanted wank material for later. After he was satisfied with the photo, he lined up the key with the locking mechanism and turned.

Click!

He watched his brother's penis slowly began to expand as he carefully pulled away the ring and cage. He was still pretty big despite the cage, but it looked like he'd lost an inch or so, based on his own estimations. There was only one way of telling for sure, though.

Without hesitation, Cory brought his muzzle to the tip of his brother's penis and began to take the soft length into his mouth. It was his first time taking someone's cock into his mouth and it was his brother. His stomach had butterflies and his face went flush as he recognized the implications of that. It tasted like urine, but he wasn't exactly opposed to that. He suddenly considered jerking off, but he did his best to keep those thoughts at bay...for now.

He bobbed up and down, cleaning his sibling's penis until the acrid taste of urine had been replaced only with that of a male deer. As he rose and fell, he occasionally glanced at his brother's shut eyes to see if he'd risen from his slumber. While he knew that the collar was keeping him under suggestion and noncognizant, the thrill of being caught was rather enticing to him.

After a minute of this, he tested his brother's firmness. He was rock hard. Success! He stroked his to check for the same and had to resist keeping it there. He so badly wanted to cum, just thinking about what he was doing.

Shoving away the thoughts of climax, he scooted forward and frotted their penises together, balls to balls, base to base. His penis leaked a bit of pre in the process. His assumption had been correct. His brother's penis was now a full inch shorter than his. Still, 7 inches was nothing to sneeze at. It was still big enough for...well...

Cory blushed, looking to his brother's shut eyelids. In a way, he was glad that his brother's body was enjoying this even if he wasn't conscious for it. He scooted backwards and his eyes glanced down at the wet diaper which was laid flat against the crib beneath him. Curious and horny, he slowly forced his snout into the warmest part, smelling his brother's musk. He whimpered like a doe.

He hated to admit it. After smelling his brother's scent, he really wanted that penis inside of him. He'd always had this fantasy of having a girlfriend and getting cucked while in a diaper with the further embarrassment of then being penetrated by the other male. His face went red.

"No!" he cried internally, shoving those thoughts of his sexuality aside. This was more like masturbation, right? After all, it was his twin brother.

He brought his head up to look at his brother's penis. It was still erect and at full mast. He watched as it pulsed and a droplet of pre coated it. Cory gulped. With legs shaking, he turned around so that he wasn't forced to face his brother and began squatting down, positioning the tip of that saliva-lubed penis to his anus.

Cory whined as he started pressing backward, starting to feel that girthy penis start to penetrate him. The largest thing he'd ever taken was a few of his fingers. This was a different feeling entirely. It felt...primal.

Little by little, he began lowering himself down his brother's penis until he felt his brother's balls radiate their warmth against his own. He decided to take a breather as soon as he was hilted. It was intense. What's more, the scent of the diaper beneath him was still enticing him. Enthralled, the deer forced his brother's wet diaper to his face, wearing it like a mask before he taped it up, breathing in the scents as his penis began to dribble even without any physical attention.

He then made a sound he didn't know he was capable of in that moment - panting like a girl as he felt his brother's penis spasm inside of him. And that's when he heard another noise - the mounting cry of a male deer...but it wasn't from him.

Very suddenly, Cory's weight was shifted forward and he was forced onto his face with the wet diaper now directly against his nostrils once more. Looking back was pointless with the diaper on his face obscuring his vision, but it wasn't hard to guess what was happening. The penis that was inside of him vacated suddenly and slammed itself back in very roughly. The mating cry issued forth over and over as his twin brother was now breeding him!

Cory couldn't help but respond, as surprised and anxious as he was. His body overrode any measure of common sense as he continued responding as a doe in heat might to this would-be partner. His insides strained as that penis penetrated him relentlessly, forcing a great weight against his sensitive prostate with each thrust. "I'm...gonna" Cory effeminately cried, letting out a loud cry of desire as his insides churned, spraying his plentiful seed into the crib below them. But unlike the masturbation he'd done in the past, it didn't stop right away. It was as if each of Dan's caused a new slightly smaller orgasm, milking more of his seed with every thrust.

Dan was dizzy. When he woke up, there was a strange female on his penis with a veil on her head. All of his male instincts were yelling "fuck her!" and so he'd complied, but his actions didn't feel like his own. He tried to say something intelligible, but it was lost in the haze of his mind. He knew this felt good. He wanted to keep going, but when that female beneath him tensed up, he couldn't help but release his seed into her. He didn't have a choice, really. That female was thirsty once she'd cum, thrusting herself back into his penis to milk out more of her cries. With each thrust after his orgasm, more and more of that fog in his mind was being lifted, but it still felt strange. There was a dull pulsing. He reached for his neck, feeling a strange latch. He pressed down and saw the collar fall to the bed along with the black box.

"What the hell?" Dan said. The suggestions from the collar's strange box were no longer feeding into him. All at once, he felt so much more clear-headed. Who was this strange female that he just fucked in his hypnotized state?

Then he noticed her horns. His horns. He retreated backwards, causing his penis to slip out of his brother. The male in front of him had a huge puddle of semen beneath him. He'd fucked a faggot and made him cum. And he'd cum too. And that veil...that was a...it was a diaper!

Cory panicked. What should he do? Dan didn't seem to know it was him based on the sounds, but he couldn't see anything.

Dan got out of the crib and got to the far wall. Wait...this was his wallpaper. This was his room. Out of the corner of his eye, he spotted the infantile clothing piled up in the corner, including more of the diapers currently on the stranger's head. All of the memories of the last week then came flooding back to him.

He was in the councilor's office to receive the materials for this 'regression therapy.' In truth, he was planning on throwing it away as soon as he got the chance, but his parents had come with him. That's when they put the collar around his neck and his mind became numb. He wasn't able to fight at all as they put him in that ridiculous getup. Then, worst of all, they'd sawed off his horns!

When he'd come home, they'd subjected him to all of the childish behavior. He was unable to keep from using the diapers and he was being bottlefed by his mother on her lap. Diaper changes and baths were being handled by his brother.

That's right...his brother. He'd been saying weird shit to him ever since he'd come home like that. The dude was enjoying treating him like a baby!

Coming back to the present, he put two and two together. The freak was into diapers. "Cory, get out of that stupid thing."

Cory reluctantly undid the tapes of the diaper on his head and turned away in embarrassment while he hid his face.

"That's really fucked up that you had me fuck you...but I guess it's better than the other way around. And you did get me out of that stupid mindfuck they put me in. So thanks, I guess," Dan said. He couldn't believe the words that were coming out of his mouth. He should be pissed off. He should be angry. He should be beating him up. Unknown to Dan, a combination of the regression therapy taking effect and having just cum in what his body thought was a woman had calmed a great deal of his raging hormones. In this moment, he was more in control than he'd ever been.

"Uhh...sorry. I...didn't mean to go that far. It just sort of...happened," Cory said shyly. He didn't really know what to do. He honestly had expected his brother to start beating him up. He wouldn't have blamed him.

After a long uncomfortable silence Dan was the first to speak. "So...you like dudes, huh?"

"N-no!" Cory said, bashfully. "It's...more about the diapers. It's weird."

"You like diapers?" Dan asked incredulously. "Is that why you were wearing that thing on your head? Was...that mine?"

Cory nodded.

"So what now?" Dan said, fiddling with the onesie that was still draped over him. He briefly considered removing it before he realized it would make him completely nude like his brother.

"I don't know. Mom and Dad are going to be gone for two days. We have time to think about it. Are you going to tell them?" Cory asked.

"Hell no. They'd kick us both out if they knew I fucked you."

The pair laughed. They'd never been close as brothers despite being twins, but this didn't feel bad.

---

For the rest of the morning, the pair avoided each other.

Dan got back into his normal clothes and set straight away into making as many pancakes as he could stomach. Bottle formula and mushed-up vegetables was no way to eat.

Meanwhile, Cory set out clearing the reminders of what had happened from Dan's room. He couldn't take the baby stuff out completely and the crib would need to stay, but he could at least hide the baby clothing and diapers. He considered swiping a few of the diapers before Dan made any sort of decision about what he wanted to do going forward but figured it would be a bad idea. If Dan found out, it might just set him off.

Afterwards, the pair ran into each other occasionally in the halls, but didn't say much. It was still a bit awkward. The pair eventually convened in the living room that night to watch one of their favorite shows. Cory had recorded the 2 episodes that had aired while Dan was in his hypnotic state and they had a relatively normal discussion about it as they watched.

Halfway through the second episode, Dan's paw went to Cory's butt to squeeze.

"Hey!" the deer said, blushing. Normally that would've provoked a different reaction from the territorial deer, but not today.

"Weird. I figured you would've gotten into one of those diapers," Dan said, pulling up his brother's underwear waistband to inspect it.

Cory blushed and shook his head. "No. I didn't want to remind you about what happened."

"Do you want to be?" Dan asked.

"Do I want to be what?" came the retort.

"In a diaper, you doofus."

Cory's face looked appropriately like a deer in the headlights as the skin beneath his fur began to burn hotly with embarrassment.

"Come on," Dan said, easily lifting Cory up.

Cory didn't resist. He had no interest in fighting someone who was now safeguarding his secret. Plus, he wanted to see where this was going as humiliating as it was likely to be. Perhaps that was why he was interested.

"Don't be so shy. You put on my wet diaper and had me fuck you while I was hypnotized. It's only fair that I get to change you now."

"F-fair," Cory replied, allowing himself to be lowered onto the crib. He started to take off his clothes, but Dan fought away his paws and started to do it for him. As his boxers were lowered, he was already at full mast.

"Do you need to take care of that first?" Dan asked, pointing to the impressive length which was sticking straight up.

"I...it's a little embarrassing to do anything like that..." Cory said, his eyes going wide as he saw Dan pull his pants down. Instead of his brother's underwear, he saw a sagging diaper. "Why..."

"I had a feeling that I wouldn't get full control back right away after peeing myself uncontrollably for a week, so...you get the picture. Besides, being in a wet diaper doesn't feel all that bad," he explained, starting to undo the tapes. As soon as the tapes were undone, Dan mashed that wet diaper into his brother's face, watching a spurt of pre leak out as he did. "You really do like that, huh?"

Cory whimpered, nodding as he panted into the heavily soaked diaper with bits of the liquid now wetting his fur.

Dan's paw went to Cory's cock, eliciting a gasp. "I've already fucked you. I imagine you wouldn't mind, right?." Wincing, he began to stroke his brother's girth up and down. "You know, if I couldn't see your horns, this would get me pretty fucking hot."

Cory didn't know what to say. He didn't know if he could respond with how forcefully that wet diaper was being forced against his maw. But he knew one thing - he wasn't going to last long like this.

"Go ahead and cum for me, you little faggot," Dan teased, watching in partial interest as the phrase seemed to be what it took.

Cory grunted, thrusting into the air as he let out his effeminate cry of climax while Dan continued stroking his penis. The cum splattered, shooting up onto his neck and chest with the rest dribbling onto Dan's paw. More and more of the fluid continued to leak out as the cry grew more and more satisfied.

"You even cum like a girl," Dan chuckled, wiping the sticky mess on Cory's chest before returning back to milk out more.

The humiliated deer just laid there, glad that the diaper was covering his face so that his brother couldn't see it. After a few moments of post orgasm bliss, he called out "you don't need to put me in a diaper."

Dan didn't respond. His paws were busy.

Cory didn't complain about the fondling, but he'd already cum. It was numb now so it wasn't going to feel any better by continuing. Plus, Dan's hands had gotten cold. Or so he thought. It wasn't until he felt the heard the click of the cage that he recognized what had happened. "What did you?!" he asked. He pulled the diaper off his face and realized the truth. The chastity cage that Dan was wearing was now on him.

"It looks better on you after all," Dan said. Quicker than Cory could process the significance, he placed the tiny key into his maw and swallowed.

Cory's heart sunk as he focused on trying to see if he could slip the cage off. "You can't...we have to put it back on you before Mom and Dad get back. You need to get the key back right now."

"No. I think you'll do just fine in my place, twin brother," Dan said. Swallowing his price, he leaned forward to push his muzzle against his brother in a kiss.

Cory was confused. Why was his brother kissing him?

Click.

Subtle vibrations emanated from the collar that Dan had placed around his neck while he was distracted. His eyes glazed over and his body went slack.

Dan pulled backward, wiping his muzzle clean. The kiss had been a distraction, but he had to admit that seeing his brother all caged was kind of hot. But he couldn't get lost in those thoughts. He needed to act now while the collar was doing the strange beeping. He needed to repeat everything that was said to him. Or...wait...he didn't actually need to. It wasn't like they were magic words...

"You are a sleepy little doe. You can only wake up when you hear Dan say your name," Dan called out, allowing for a pause.

"I'm...a sleepy little doe," Cory repeated, "I can't wake up unless I hear Dan say my name."

"Like all little does, you can't control yourself. You have to use your diapers."

"I have to use my diapers," came the response.

"You need to be a good fawn."

"I need to be a good fawn."

"To be a good fawn, you need to obey your brother."

"I need to obey to be a good fawn."

"Good fawn. Now go to sleep."

Dan knew he could always take the collar off and try again if he needed to, but he figured he didn't need to say any of the rest of the stuff about returning to a kid again. It wasn't as if Cory needed the regression therapy - he'd just be taking his place. The collar stopped beeping and Cory fell to sleep.

"Now for the careful part," Dan said. Carefully, he took the handle of the saw and lined it up to where his own had been taken. One time when he was a little kid, his horn had broken off after ramming into a tree. The doctor had fixed it with some glue and fire. He would hopefully be using that now.

He heated up the nubs atop his head and his brother's removed horns until they felt supple, then applied the glue. Afterward, he placed the horns atop his head and hoped for the best. Once he felt that they'd settled enough, he went to check the mirror. It was perfect! You couldn't even tell that they'd been removed. He certainly wasn't going to go charging a tree any time soon, though.

With the hardest work over, Dan began putting Cory in all of the gear meant for him and tried his hand at putting Cory in a fresh diaper. He'd need practice, after all. After the work was done, he put his twin brother into the crib and clipped on the restraints to his brother's rubber mitts.

---

"Cory."

The hornless deer began to rise from his slumber. Very quickly, he recognized his predicament when he tried to stretch and the restraints rattled against the crib's frame. The words from his mouth were silenced by a pacifier.

"It's okay. You like being in your diapers, don't you?" Dan said.

Cory was conflicted. On one hand, this should've been incredibly sexy. This was what he wanted originally. Now that he was in it this predicament, he was having second thoughts. He shook his head. This wasn't a good idea. Their parents would find out. How would they possibly hide that his horns were...missing...

"Ohh, you noticed?" Dan asked, reaching up to softly rub at the horns when he saw his brother staring up at them. "Thanks for the donation. In return, you can have all of my baby stuff."

Cory whimpered and tried to say, "Don't do this! They'll still find out!" yet nothing intelligible came out.

"I have no idea what you said, but judging how quickly you came in my used diaper, this is all just commitment jitters. Don't worry. I'll switch back at the end of summer. For now, I need you to keep using your diapers and playing a good little fawn for me, okay?"

Against his will, he felt the need to obey. To be a good fawn. He nodded. As he did so, he thought he heard a trickle. His crotch felt warm. Did he just...pee himself?

"Good little fawn. If you're an especially good boy, maybe I'll even help you out with this," he said, placing his paw atop Cory's crotch.

Cory's penis couldn't feel anything. What he could feel was the warmth spreading around as he continued pissing himself. As he strained to look down, he realized that his brother hadn't skipped any of the gear. The onesie, the rubber pants, and the diaper. Then he remembered that the cage was on him. A part of him hated this, but the rest of him was incredibly turned on. Was his penis going to shrink like his brother's?

"Whelp. No need to take you away from what you love. Be a good fawn and get used to that feeling of peeing yourself and laying in your crib. I'll be back when you need a change."

Cory's mind fogged over and the worry of having peed himself faded. He belonged in his crib in his wet diapers. He was a good fawn.