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switchytrans · 2 years

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Is there any chance of you considering the breeding trials? I've reread them so many times omg

The scientists are unbelievably excited as they gave me my check up. They keep whispering to eachother and laughing as they inspect me, and I can see some of them touching themselves over their uniforms in the brief moments when they think no one is watching. None of them tell me anything, and everytime I try to ask, I'm only met with knowing glances and snickers.

"Its gonna split her open," I hear one of them whisper.

"No, she'll take it. The real question is if she'll pass out or not." Another answers, and I catch her grinning at me, "you'll get a couple days off after this," she tells me, "you'll need it."

They walk me to an observation room, one of the large tanks they're so fond of leaving me in now. There's nothing inside, save for a second door attached to a smaller room made with heavily tinted glass, though I can hear something snarling and pacing inside. "What is that?" I ask, turning to face them, but they all ignore me.

I hear a loud click behind me, and the low groan of hinges, followed by the slow, methodical pad of heavy feet against the hard tile floor. I turn slowly, and my knees buckle beneath me. A massive wolf creature looms above me, its fangs are easily each the size of my arm, and it drools puddles onto the floor as it stalks closer, and there is very little comfort in the fact that it's wearing a muzzle. I can see its twitching cock hanging between its legs, long and thick, with a swollen knot at its base, dripping with precum and throbbing as it gets closer.

I cant imagine how that thing will fit inside me, but I cant find my voice to protest. "This creature will breed its partner until it smells a successful pregnancy," a doctor says over the intercom, "since we've given you something to prevent that from happening with any of our creatures, it will breed you until it physically cant anymore. We're all very eager to learn how long that takes."

It snarls louder when I try to back away, and a large clawed hand lands on my chest, pinning me easily to the floor. It leans down, and I feel the cold metal of the muzzle bump my thighs as it sniffs me. Its cock twitches harder, and it suddenly stands on its hind legs, picking me up as easily as if I were a little doll. Its drool drips over me, hot and slick, dripping down my body and onto the floor. It lowers me slowly onto the tip of its cock, and I whimper as it begins forcing itself into me.

"Its too big," I yell, "please, I cant take it!"

"Yes you can," one of them answers, "and it's not like you have a choice. We cant stop it now thats its decided to breed you." I swear I hear a note of smug glee in her voice, but I'm immediately distracted as the creature forces it's cock deeper into me with another long growl.

It's so hot inside me, stretching me more than I thought possible, twitching and leaking and making my body jolt.

The only mercy is that it goes slow, easing itself into me, panting harder as I near the top of its knot. I try to relax, to find some pleasure in the sensation so that I can take all of it inside me. It does feel good, the tight pressure of my body struggling to accommodate its size, and the visible bulge twitching through my stomach, filling me so deeply. My head falls back as it forces in another few inches. The head of it's cock has already well since met my cervix, but it wont stop until it's completely inside of me, and I shudder at the thought of it spilling its cum directly into my womb.

When my head falls back, I can see the scientists all watching with rapt fascination. I can see some of their erections through their pants, and a few of them are clearly pulling their lab coats around them to try and conceal how they're fingering themselves. Earlier in the morning, one of them told me she and her friends couldn't wait to have me alone. No one gave a shit if the doctors took advantage of the volunteers, we were all nothing but breeding whores anyway, so who cared what they did to us? I began to fear, and maybe secretly hope, that the experiments were skewing away from pure scientific curiosity and toward the doctors own fantasies. Perhaps it was the exhaustion or the physical strain or the aphrodisiacs that never quite left my system, but my pussy clenched hard at the thought of being used as living porn for the doctors.

The creature snarled as I clenched around it, and I found myself pinned to the floor again as it began to slip out of my pussy. I could see the doctors more clearly now, their faces flushed as they toucbed themselves between taking notes, watching so excitedly when the creature slammed back inside me without warning.

I screamed, and it did it again, slowly building to a rapid pace and holding me down as it rut into me, its cock continuing to bulge deep in my stomach. I swore my body was going to split apart, but I kept taking it, swearing and moaning as it fucked into my cervix with each thrust, its knot meeting my hole with increasing urgency until it pulled almost completely out and then slammed into me with enough force to wedge the knot inside.

My vision blurred for a moment, and I couldnt seem to remember how to breathe. The creature didn't stop, in fact its enthusiasm only seemed to increae now that it had knotted me, and it thrust into me as hard and fast as it could now that it was firmly wedged inside.

My moans reduced to nothing more than wheezing breaths, punctuated by weak gasps for it to breed me already, and, finally, I got my wish. It's hips jolted and it let out a howling whine as burning hot cum flooded my womb. I could see it twitching inside me, and my belly swelled with the sheer volume of cum, which seemed like it would never stop.

The creature pulls out of me slowly, and I cum as its seed gushes out of me in thick waves, leaving my body shaking and clenching on the floor in the warm sticky puddle. It leans over me, and sniffs deeply, before it snarls and forces it's cock into me again, dissatisfied by my inability to be bred how it wants.

I look back at the doctors, many of which have given up any discretion and now openly touch themselves, rubbing their clits and stroking their cocks as they watch it breed me over and over and over until I lose count. It stops bothering to pull out and check after the first six times, and then simple continues fucking me and trusts its knot to plug its cum inside of me, though some spills out around it.

Hours must pass, and though I never lose consciousness, I'm barely aware of my surroundings. I cum without really noticing anymore, and my stomach continues to swell with hot cum until it's forced to leak around the knot. At some point the creature forces me to lay on my stomach, pressing my cheek into the pool of cum that has amassed around my body.

I almost dont even notice when it slows down. It pants heavily, and my body is held aloft only by its hand supprting my stomach and keeping my hips raised for it to rut into me. I stare at nothing, vaguely aware that some of its cum has gotten into my mouth and not caring. It suddenly lifts me, holding me aloft on its cock like a fleshlight, it's cum dripping off me my body.

It begins lifting me up and down, and I realize my comparison couldnt be more accurate as it uses me to jerk off, grunting with one final burst of vigor in a vain attempt to breed me, no longer caring to be even somewhat gentle with me, squeezing until I cant breathe, rocking me onto its cock with every desperate ounce of strength it has left until the final wave of cum pours into me. It holds me down on its cock, roaring as it floods my poor body one last time, trying to bury its cock as deel into my womb as it can. Before finally laying me down and letting me slip off of its cock. I catch briefly on its knot, but slowly it's pushed out of me by the pressure of the buildup of its cum. It pours out of me in thick pulses as my pussy clenches around the unfamiliar sensation of nothing.

I hear the creature pace back into its cell, before collapsing in an exhausted heap as the door shut and locks behind it, and then doctors rush in to tend to me.

They lift me up, wrapping my arms around their shoulders to keep me upright as they carry me away, cum dripping from my pussy the whole way to the baths.

I expect them to leave me to the attendants to clean, but the three doctors who accompanied me instead let me sit against the wall and undo their pants. I start to protest, but one of them clamps her hand over my mouth.

"We're not going to fuck you," she promises, "we just want to finish. You're so fun to get off on after all, and who can tell which cum is ours, and which is the creatures?" She begins stroking her cock, holding my jaw with her free hand to make sure I watch. "Open your mouth." I obey, and she cums over my tongue, laughing as it drips down my chin.

She steps aside, and the next doctor has the other two lay me down. She kneels between my legs, and the others hold my thighs up and open so she can cum into my stretched hole.

The third is less deliberate, and just makes sure to rub her cock against my cheek as she cums on me, murmuring what a good girl I am.

"She looks so good covered in cum, doesnt she?" One of them asks, and the other two nod in agreement.

"Shame she has to get cleaned up, I like seeing her look the part of cock hungry cum slut."

"She always looks like a cock hungry cum slut."

"Yeah, but I like when she looks used."

I listen to them in a daze. My body is sore and beyond exhaustion, and their words are making me long to be fucked again, even as I know my body can't handle it. I want to be their cumslut, and i find myself imagining being left in a break room or common area, held upright by some contraption with my holes always presented and ready to be filled.

They take me into the baths proper, and I'm gently washed and massaged until I nearly fall asleep in the arms of my attendant, who helps me into the dorms where I and the other volunteers sleep, and I drift off to the promise of being allowed to do whatever I want tonorrow, no experiments required, unless of course, I want to be in one.

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