Up the Cunt (scat, guro, loli, incest, bad parenting, trans character)

1. I am a fairly new erotica writer and as such am hungry for constructive criticism and feedback on my work. This story has been posted on multiple platforms. Please let me know in the comments or via whatever messaging platform is available what you thought of the story, even if you did not like it at all. The only exception to this call for feedback is that if you wish to criticize this kind of (violent, sexual, underage) content, please rather keep it to yourself. If you do not mind this kind of content or enjoy it, but nonetheless feel this story is subpar, do engage.

2. This story is only an exercise in catharsis – its content and characters are entirely fictional and do not represent any real-world preferences or desires. If you are easily offended by themes or literary portrayals of betrayal, extreme sexual violence, and underage characters engaged in sexual and violent scenes, please do not read any further than this.

3. If you enjoyed this story, let me know. That's the only way I know to write more!

***

Alex grunted with pleasure as Sheldon's cock throbbed in their ass.

The 16 year old rubbed their nipples and caged cock vigorously as their 19 year old boyfriend's thick length stirred their prostate. The teenager moaned softly, precum leaking from the small slit in the cage.

The cage wasn't a permanent feature. Sheldon just insisted that he wasn't gay, so as his "girlfriend" Alex had to make sure no boy-parts came out during their lovemaking.

Except for their penis, Alex looked precisely as one would imagine a female teenage bombshell would, with long, slender legs, supple, well-developed breasts with pink eraser-like nipples, and a smooth, rounded butt. A face that could belong on a teen magazine cover crowned the ensemble.

If they weren't a biological boy, Alex could have been the captain of the cheerleading squad. And this was rare.

Traces of maleness tended to remain for most transgender women, but Alex's mother had started their hormone treatment years before the onset of puberty, over the objections of their father. The result was that Alex had grown into exactly the daughter their mother wanted: fully feminized, soft-bodied, and smooth-skinned. Then their mother died.

"Ah, Alex," Sheldon breathed as he felt the familiar tightening of his imminent orgasm. "Oh god, I'm close... I ca-I can't hold it…"

Sheldon's grip tightened on Alex's small waist as his thrusts became shorter and faster.

Alex loved this part. He became primal, selfish.

"Yes," Alex moaned, clamping down hard on Sheldon's shaft, making him yelp and cry out as his orgasm approached.

But when the first thick ropes of his load shot into Alex's ass, Sheldon didn't stop. His hips kept slamming into Alex, making a soft slapping sound with each impact, his cock releasing more and more cum into Alex's rectum.

"Yes!" Alex cried out, not caring that the apartment walls were thin, and the neighbors could probably hear them.

"Shit..." they added. "I-I'm also gonna..."

"N-No!" Sheldon yelped, and quickly pulled out of Alex.

Alex whined and tried to keep from climaxing, but couldn't hold back. They knew Sheldon hated seeing them ejaculate.

With a soft, high-pitched groan, their caged cock began to weakly spurt ropes of cum from its metal prison, their seed splashing onto the bedsheets below.

Sheldon scrambled away and off the bed. He sighed, running a hand through his short brown hair, his eyes fixed on the floor as Alex came.

"Damnit, Alex," he said quietly.

Alex sighed.

"Sorry, honey," they pouted.

"It's alright," Sheldon said, walking toward the bathroom. "Just please clean up."

"I will," Alex called after him. "Love you."

"Yeah, love you too," Sheldon responded as he closed the bathroom door.

Alex waited until he heard the water turn on, then got off the bed, clenching their sphincter to avoid spilling Sheldon's cum onto the floor. They grabbed the empty wine glass by the bed, placed it under their ass, and pushed the semen out into the glass. The thick, white fluid pooled at the bottom.

It wasn't much, as most of it was already deep inside Alex's intestine. But it was enough.

They swallowed, feeling the warm, slightly salty liquid coat their throat. It tasted like Sheldon, and Alex cherished that taste. They closed their eyes and moaned softly, finishing the last few drops.

They put the glass back on the nightstand and grabbed their purse, fishing out a bunch of tissues and the key to the chastity cage. Alex unlocked the device, their cock springing free, still slick with their own ejaculate. They cleaned themselves off, wiping their penis and the cum stain on the sheets. Then they laid back down on the bed, a contented sigh escaping their lips.

The sound of running water stopped, followed by the sound of Sheldon rummaging through the bathroom closet. He emerged a moment later, still naked.

"Wanna take a shower?" he asked Alex. Sheldon usually dropped Alex off at school when they stayed the night.

Alex smiled up at their boyfriend.

"No," they said. "I'm cleanest when covered in your smell and sweat."

They batted their long eyelashes at him.

Sheldon rolled his eyes playfully.

"You're impossible," he said, pulling a clean t-shirt and a pair of jeans from his dresser. "You know that, right?"

Alex's grin widened.

"You love me for it."

Sheldon chuckled, before noticing Alex's phone light up. It was on silent.

"Someone's missing you," he said.

Alex sighed.

"It's my dad," they said. "He wanted me last night."

"Have I told you it's weird that you two fuck?" Sheldon asked, stepping into his jeans.

"You may have mentioned it a couple times," Alex said dryly. "He hasn't left me alone since..."

Alex's voice trailed off.

"You transitioned," Sheldon said, chuckling. "I'm not a baby. I accept who you are, and you respect my sexual boundaries."

Alex smiled at him.

"Yeah," they said. "He hated my mom for doing this to me, but he's obsessed with the end product."

"Well," Sheldon said, zipping up his fly and buckling his belt. "He and I have something in common then."

"You can say that again," Alex laughed, sitting up and stretching. "Anyway, if I keep him occupied he'll keep his hands off my sister."

Sheldon chuckled.

"You hate your sister's guts," he said, pulling his t-shirt on.

"And she hates mine," Alex confirmed. "But the little cunt has a cunt and I do not want an inbred half-sibling crawling around if I can help it. Luckily he's only had the hots for me so far."

They stood up, grabbing the clothes they'd laid out the night before.

"I'll take that shower after all," they said. "Can't go to school smelling like sex, now can I?"

Sheldon watched as Alex walked toward the bathroom, their feminine hips swaying with each step.

"Nope," he said, a fond smile on his face. "Certainly not."

***

School was a drag, as usual. Alex sat in the back of their English class, doodling in their notebook. They were wearing a tight, low-cut top that showed off their cleavage, and a short skirt that barely covered their ass. The outfit was deliberately provocative, a little rebellion against the suffocating boredom of high school.

The teacher, a portly man named Mr. Evans, droned on about Shakespeare.

Alex's attention drifted, their mind replaying the night before. Sheldon's hands on their waist, his hot breath on their neck, the way he'd looked at them after they'd cleaned up, a mix of exasperation and affection.

The bell rang, jolting Alex from their reverie.

They gathered their things and headed for the door, their hips swaying as they walked. As they stepped into the crowded hallway, a familiar voice called their name.

"Alex! Hey, Alex!"

It was Maya, their best friend since elementary school. She was a whirlwind of color and energy, with vibrant dyed-pink hair and a constellation of freckles across her nose. Today she was wearing a band t-shirt, ripped jeans, and a scowl.

"Maya!" Alex exclaimed, genuinely happy to see her. "What's up?"

"Not much," Maya said, falling into step beside them. "Just the usual. Boring classes, judgmental stares, the whole high school experience."

Alex nodded, a small smile on their lips. They did know.

Maya was one of the few people at school who knew Alex's full story, the medical details and the emotional turmoil. She didn't care about any of it. As far as she was concerned, Alex was just Alex. A beautiful, slightly unhinged teenage girl who happened to have a penis.

"How was your 'date' with Sheldon last night?" Maya asked, a glint in her eye.

"He was... enthusiastic," Alex said, their voice dropping to a conspiratorial whisper.

Maya snorted.

"I bet. He always is. Did you get to... you know?"

"Nope," Alex said, popping the 'p'. "The cage stays on."

"Ugh, what a dick," Maya said, though without any real heat. She knew the drill. It was a strange, complicated arrangement, but it seemed to work for them. "Did you at least have fun?"

"I had a blast," Alex said, a mischievous glint in their eyes. "So did he, in more ways than one."

Maya shook her head, a grin spreading across her face.

"You are something else, you know that?"

"So I've been told," Alex said, flipping their long, blonde hair over their shoulder.

"You should go back there after school," Maya continued. "Give him a little afternoon delight."

Alex considered it, then shook their head.

"No," they said. "Sheldon takes Thursdays to study. His dad is a real dick about his grades."

"Right, right, whatever," Maya said. "You should go back there after school."

Alex laughed at the repeat.

"If you're so eager for me to get some, why don't you date him?" they asked.

"He's too white, too straight, and too conservative for my taste," Maya said with a grin. "But he's not bad to look at, so I see him vicariously through you."

Alex just shook their head.

"Fine," they said. "I'll go back. But I'm just gonna take him some food and let him study. Maybe he'll be grateful later."

"A roundabout way of getting into his pants," Maya observed. "I like it. Cunning."

Alex shrugged.

"I do what I can."

***

After school, Alex walked to the local deli, the little bell above the door chiming as they entered. The familiar smell of pastrami and dill pickles filled the air.

They ordered a sandwich for themselves and Sheldon, their mouth watering at the thought of the succulent roast beef and tangy mustard.

Sheldon's place was a 15 minute walk from school, during which time Alex finished their own lunch. It was a quiet, tree-lined street, the kind of place where you could imagine raising a family. A stark contrast to Alex's own chaotic household.

They reached Sheldon's apartment building and took the stairs to his floor, the key he'd given them a warm weight in their pocket. They let themselves in.

"Shel..." Alex began, before a sound from his bedroom made them stop.

It was a giggle.

A giggle that was not Sheldon's, and certainly not Alex's. It was high-pitched and feminine, and it made Alex's blood run cold. Then another giggle joined the first, slightly deeper but just as feminine.

Heart hammering against their ribs, Alex crept down the hallway. The bedroom door was ajar. Alex peered through the crack.

Sheldon was lying flat on the bed. On top of him was a naked girl.

But not just any girl.

Bethany, with her petite frame and long, wavy blonde hair that cascaded down her back, her face framed by delicate, feminine features. The girl's body was a vision of perfection, her small breasts pert and her waist slender.

She happened to be Alex's 14 year old sister.

And she was riding Sheldon's cock to the hilt.

Beside them on the bed, also naked, was Clara, Bethany's best friend.

Clara had shorter, fiery red curls and freckles dusted across her shoulders. She was leaning against the headboard, watching Bethany with a smug grin as she casually played with her own little tits.

Alex's world tilted. The plastic bag containing Sheldon's sandwich slipped from their numb fingers, the thud of it hitting the floor muffled by the carpet.

Bethany was smiling, her head thrown back in pleasure, her long hair brushing Sheldon's legs.

Sheldon's hands were on her hips, guiding her movements, his face a mask of raw desire.

Clara noticed the door first, her eyes widening as she spotted Alex through the crack.

"Uh, Beth..." she started to say, but it was too late.

Alex pushed the door open.

The sound was louder than Alex had intended.

Bethany yelped, scrambling off Sheldon, grabbing a blanket to cover herself. Clara shrieked and grabbed a pillow, also attempting to cover her naked form.

Sheldon groaned, his eyes widened in shock, a deer caught in the headlights.

"This is what you do on Thursdays?" Alex's voice was dangerously quiet, a stark contrast to the roaring in their ears.

"It's not what..." Sheldon tried to answer, but his cock continued to twitch and began to spurt a stream of semen onto his stomach.

Bethany just giggled.

"He needed a real girl," she said in that child-like, singsong voice of hers that made Alex's teeth ache with hatred.

"Two real girls," she added, glancing at Clara.

Alex stared at Sheldon, at his slowly softening, cum-smeared cock. Then back at Bethany and Clara.

"Fucking whores!" they shouted, and lunged at their sister.

"Alex, don't!" Sheldon yelled as Alex tackled Bethany to the floor.

The girl shrieked as Alex grabbed a handful of her blonde hair and slammed her head against the floorboards.

Bethany struggled, her small hands pushing against Alex's chest, but she was no match for Alex's desperate strength.

Alex was a blur of motion, their hands flying, their nails scratching, their knee pressing into Bethany's throat.

Bethany gurgled, her eyes wide with fear.

Then, a strong pair of arms wrapped around Alex's waist and pulled them off.

Sheldon held Alex tight, their back pressed against his chest, their arms pinned to their sides.

"Let go of me!" Alex screamed, thrashing against his hold. "I'm going to kill her! And you're next!"

They squirmed, and their elbow connected with Sheldon's ribs, making him grunt.

But Sheldon's grip remained firm. He was stronger, and his adrenaline had kicked in. He managed to maneuver them both out of the bedroom, kicking the door shut behind them. The thud echoed like a gunshot in the small apartment.

Alex finally broke free, stumbling back and gasping for air. They glared at Sheldon, their chest heaving.

"You fuck my sister?" Alex hissed. "After everything?"

"I'm so..." Sheldon began.

"Save it," Alex snarled, wiping a stray tear from their eye.

Then they turned around, grabbed their purse, and left.

***

"What's going on?" Peter, their father, asked over dinner that night.

Alex sat there in silence, staring daggers at Bethany, who was smiling sweetly at their father. Beside Bethany, Clara chewed her food slowly, her eyes darting between the siblings with keen interest, a small, knowing smile playing on her lips.

"Nothing," Alex said.

Peter, a man in his late forties with a perpetually tired expression, narrowed his eyes.

"Don't lie to me," he said.

"He's just having some tranny angst," Bethany chimed in, her voice dripping with mock sympathy.

"Take it up the ass, whore," Alex shot back, their eyes briefly flicking to Clara.

"Oh, Sheldon already gave that a whirl," Bethany said, Clara covering her mouth to stifle a giggle. "Maybe you should take it up the cunt. Oh, wait!"

Peter choked on his food, his fork clattering against his plate.

He stared at his younger daughter, then at his elder, and finally at Clara, who was now openly smirking.

"What the hell is this?" he demanded, his voice rising. "Stop it, the both of you!"

Alex pushed their chair back and stood up.

"Screw this," they said, and walked out of the room.

They could hear Bethany's triumphant giggles, joined by Clara's, as they left.