There was no hope of sleep. Alex lay in bed, their mind consumed with thoughts of Sheldon with Bethany and Clara, of Sheldon's hands on her hips, of his voice when he'd said her name, of Clara's smug smirk.

They had never felt such a burning rage. They wanted to tear their sister apart, and that redheaded bitch with her.

Alex had always been protective of Bethany, in their own way. She was their little sister, after all. Even with her constant taunts and jabs, Alex was the older sibling. They were supposed to look after her.

But this... this changed everything.

Alex turned on their back, grabbing hold of the covers tightly as an idea began to take form.

'Take it up the cunt!'

Bethany had wanted to hurt Alex with her words, but perhaps she'd unintentionally gifted them the ammunition for the perfect revenge.

"Yes," Alex sighed, pushing the covers off and looking at their clock. "Up the cunt."

It was after two in the morning. Their father, sister, and the cunt's little friend were sure to be asleep.

They crept silently through the dark house to Bethany's room.

Alex quietly turned the knob and stepped into the darkness. They could hear the soft, even rhythm of breathing from the bed, two sets of it, mingling. Two shapes tangled in the sheets.

Alex tiptoed across the room, until they were standing over the sleeping girls. For a moment, they just stood there, watching them. Bethany's blonde hair spread across the pillow like a halo, and her naked chest rising and falling. Next to her, Clara slept in thin pajamas, a tangle of red curls on the pillow.

And then, with a slow, deliberate motion, Alex climbed onto the bed, straddling Bethany.

With a gentleness that belied their intent, Alex wrapped their fingers around the blonde girl's neck, making the sleeping girl stir slightly. They pressed gently, but not enough to wake her.

'Bethany didn't have Sheldon to protect her now,' Alex thought with a smile.

Slowly, methodically, Alex increased the pressure in almost imperceptible increments. This carried on until Alex felt Bethany's breathing grow ragged.

Alex waited, keeping the grip. Then they increased the pressure again, in another micro-increment. Then they increased it one more time, until Bethany let out a choked sigh, and her body relaxed completely.

Alex kept the grip for another moment, then released. They checked for a pulse with their finger on the girl's neck. Still there.

Then they took hold of Bethany's right nipple and twisted. No reaction.

Alex shifted their attention to the second lump under the covers.

Clara mumbled something in her sleep. Alex didn't hesitate. They repeated the entire, chilling process, their fingers wrapping around the pale skin of Clara's throat. They felt the initial flutter of the girl's pulse beneath their thumb, a steady, unsuspecting rhythm that Alex meticulously worked to still.

Just as before, the breathing became ragged, then stopped with a final, soft sigh.

Alex released her and felt for a pulse. Low, but there.

They twisted Clara's nipple through the thin fabric of her pajamas. Nothing. Not even a flinch.

Perfect.

Alex climbed off the bed and walked quietly to the bathroom. In the cabinet under the sink, they found a pair of medical gloves and snapped them on.

They then looked at themself in the mirror for a moment, taking in the determined set of their jaw, the cold fire in their eyes.

'Up the cunt.'

Alex lowered their panties and perched on the edge of the bathtub.

It took some determination, but eventually Alex was able to produce a decent-sized log of shit. They'd eaten a big lunch after all.

Alex reached behind themself into the tub and took the solid mass into their gloved hand.

It smelled vile.

Alex wrinkled their nose and fought back the urge to gag.

They returned to Bethany's room. The sleeping girls hadn't moved.

With their free hand, Alex gently spread Bethany's legs apart, exposing her 14 year old pussy.

It was the first time Alex had seen it up close. It was small and hairless, a little slit in the soft skin of her mound.

Alex understood the appeal.

Then, with a deep breath, Alex broke the log in two halves. They brought the first half of the hard, dry feces to their sister's cunt and began to slowly feed it inside.

It was a tight fit at first, but the waste was firm enough to hold its shape. Alex pushed, careful not to break it further. They worked methodically, ignoring the foul smell that filled the room, their focus absolute.

Bethany stirred a little and made a soft noise. This made Alex pause. But she didn't wake.

A moment later, and the first half was inside. But Alex knew it was still too shallow. It would begin falling out as soon as she moved her legs.

Alex stood back and looked around the room for a solution. Their eyes landed on a thin metal bottle of lotion from a brand for teenage girls.

That'll do.

Alex took the bottle and, holding it by its cap, inserted its base into the vaginal opening. They pushed, using the cylinder to pack the fecal matter in deeper and deeper. Then they felt resistance as the log hit what Alex assumed was Bethany's cervix.

Almost there.

Alex pushed harder, twisting the bottle slightly, relishing the muffled squelch of the excrement being compacted.

Finally, they felt it give way. Alex had successfully forced the shit through Bethany's cervix, depositing it directly into her young womb.

Bethany let out a soft moan but remained otherwise still.

Alex carefully withdrew the bottle.

Then, they turned their attention to the sleeping Clara.

Alex peeled Clara's pajama bottoms down to her knees, their gloved fingers deliberately brushing against the redhead's warm skin to test for any response.

The fabric whispered softly as it slid down, exposing Clara's freckled pussy to the cool night air. Alex noted the small tuft of red curls at the apex, a stark contrast to Bethany's smoothness.

They repeated the vile process, forcing the remaining half of the log deep inside Clara's tight passage.

Using the lotion bottle again, Alex pressed it against the resisting flesh, feeling the resistance give way with a sickeningly familiar squelch as the fecal matter breached Clara's cervix too.

Clara didn't stir at all, her breathing remained even and deep as Alex's most intimate violation of her body was completed without so much as a flutter of her eyelids.

Alex's heart pounded with a cold, fierce triumph. It was done.

'Let's see how having cunts serves you bitches now,' Alex thought with a sly smile.

They went back to the bathroom, peeled off the gloves, and dropped them in the toilet, flushing them away with a satisfied flush. They rinsed the lotion bottle thoroughly, wiping away any trace of their crime before placing it back on Bethany's dresser, exactly as they'd found it. Alex pulled Clara's clothing back up and made sure the crime scene was clear, before returning to their own room.

They lay in bed, the adrenaline slowly ebbing away, replaced by a profound, unshakable calm. Revenge was a dish best served cold, they'd heard. But Alex preferred revenge served hot, steaming, and lodged directly up the cunts of the people who'd wronged them.

They closed their eyes, and for the first time that night, they felt the gentle pull of sleep.

***

The next morning, Alex was the first to the breakfast table.

They sat there, nibbling on a piece of toast, watching as Bethany stumbled into the kitchen. Her movements were stiff, her face pale.

"Someone's not a morning person," Alex said, their voice light, innocent.

Bethany shot them a look of pure venom.

"Shut up," she mumbled, pouring herself a glass of orange juice and taking a small, tentative sip. She seemed to be in some discomfort.

Their father shuffled in a few minutes later, still in his bathrobe, his hair a mess. He looked from one daughter to the other, sensing the tension.

Peter's gaze settled on Bethany.

"What's wrong with you? You look like crap," he said. "Feeling bad about what you said last night?"

A small smile touched Alex's lips.

Bethany rolled her eyes.

"Just a headache, and... an..." she paused.

At that moment, Clara emerged from the hallway, a hand pressed to her stomach. Her face was even paler than Bethany's, and her freckles stood out starkly against her clammy skin.

"I had to puke," she announced weakly to the room at large. "I feel like I'm dying."

This was all it took. Alex and Peter heard Bethany's stomach gurgle loudly.

Bethany's eyes widened in panic, her face turning from pale to a sickly shade of green. She bolted from the table.

They heard the thud of a bathroom door slamming shut.

Alex took another bite of their toast, the crunch loud in the sudden silence.

Clara slowly sank into Bethany's vacant chair, her movements slow and deliberate, her eyes distant.

Peter stared in the direction of the bathroom, then glanced at Clara, a confused look on his face.

"Stomach bug," Alex said, chewing thoughtfully, directing the comment at their father. "It's been going around."

Clara gave a weak nod, her hand still pressed against her stomach.

Peter shrugged, seemingly accepting the explanation. He poured himself a cup of coffee.

"By the way," he said, his voice casual. "You and I haven't had any special father-daughter time in a while."

Alex's chewing slowed. Special father-daughter time. That was their father's euphemism for the nights he would come into their room and fuck them.

"I suppose not," Alex said, their voice neutral.

"Well," Peter said, his eyes glinting. "If you don't want to..."

Across from them, Clara shifted slightly, her gaze flickering between Alex and her friend's father.

Alex thought about Sheldon's betrayal. Their boyfriend... not anymore.

"No, Dad," Alex said, the decision solidifying in their mind. "I want to. I need it."

It was the perfect answer.

"Good," he said, a warm smile spreading across his face.

Clara's eyes widened for a brief moment before she lowered her gaze, her hands unconsciously tightening around her stomach.

From the bathroom, they heard a retching sound, followed by a low, miserable sob.