Twilight's Science Class

The first thing Twilight did was layer Maud's body with weakness spells. She'd seen the pony smash through boulders with ease, and as curious as she was about her own, alicorn durability, she knew they wouldn't record it and that was the most important thing. She lifted one of the earth pony's hooves in her magic, studying it. She decided to cripple her as she had Limestone-she wasn't going to take the death of all her sisters well, she knew.

She twisted the legs, starting at the hooves and moving up joint by joint, watching Maud's face as it twitched in pain, making Twilight's pussy juice up enthusiastically, cock now hard and slapping her belly. She waggled her rear at Big Mac, "Mount me, I wanna be fucked while I do this!" she moaned.

Under her spell, he had no choice but to mount his sister's killer, stretching out her juicy cunt with his size. She moaned, moving her hips back onto his cunt swab, meeting him as he began to thrust. He glared at the back of her head, all he could do, as he wished he could fuck her to death right there and then.

She was oblivious, but she wouldn't care if she did know. With each snap of the joint, she clamped down on him, and he couldn't help but enjoy it, knocking at the door to her womb. She thrust herself back as he forward, ripping her cervix open violently. She screamed, and for a blissful moment he thought the sick cunt had murdered herself, but it became clear she was enjoying the pain and her alicorn healing factor ensured she wouldn't pass from just this.

"It...it hurts! But oh Celestia, I'm going to cum so hard!" She mewled, using her magic to jerk herself off furiously, almost painfully, as she abused her pussy on Mac's cock. She finally went off, soaking behind and in front of her, splattering Maud's belly with her spunk.

Twilight pulled herself off Mac, his cock throbbing in protest at the early withdrawal. Twilight pulled the pieces of Pinkie over to her, making sure the other two were in sight as well, although Pinkie was the main event. She rubbed her soaked cunt on Pinkie's detached head, making it wet with femme cum.

She pushed Maud's muzzle against Pinkie's corpse cunt, and then magically roused her from the drugged sleep. Maud stirred, mumbling, licking her lips at the taste of her favored sister. She frowned, realizing something was wrong, opening her eyes...to be met with the bodies of her sisters, mauled, raped in every way, Pinkie in literal pieces with an expression that was far more pleased than it should be.

The agony in her limbs hit her at once, making her grit her teeth, looking around in a fury she couldn't act upon. Twilight smiled at her in an unhinged way, Mac's fur wet with sweat and his own tears. Twilight petted Maud's hair, who tried to bite her. The princess chuckled, unperturbed. "Hello, Maud...welcome to my experiments! Oh I've had so much fun, and learnt so much about the body and its durability! And now...I'm going to learn about the mind!"

She pushed Maud's head back down to Pinkie's pussy. "Eat up! And I know, I know...what would I do if you refused?" she straddled the earth pony's back, thrusting her cock against her spine. "W-well, I...I have some spare nails, you see...a-and I..." she moaned, moving faster. "So much! I shouldn't, but oh, I can't help it! Learning while I get off...it's too much to resist!"

Maud shivered...she was insane, lost it. ...she'd bide her time, the longer she played along, the more likely she was to be rescued. "I will....comply," she agreed, turning her gaze to the sperm dripping pussy. ...this was going to be much harder than simply saying she would do it. She leaned in, before leaning back, and then in again, tongue lapping at the clitoris.

Twilight leaned over her head, watching. "G-good...put...put your tongue in her...french her good and deep!" she encouraged, rubbing her cock with her magic now. Maud pushed her tongue between the pink folds, before gagging, retreating before she threw up.

She took a deep breath, she had to...she needed to at least try, to survive this. She pressed her tongue into the dry, frigid folds, only Twilight's slightly fresh sperm giving the hole any warmth. Maud resisting crying-she didn't know if that was something the mad ruler wanted, but she wouldn't chance it. She did wonder briefly if that would, at least, make the dry folds easier to lick. She twitched her front hooves, wanting instinctively to turn up her favored sister's bottom to dyke out properly, pushing down the pain that came with it.

She slurped deep, pretending Pinkie was alive, just filled with party favor. It didn't work, and she turned her head to retch, but kept her lunch down at least. She realized with a sinking feeling she might not survive this...just like all of her sisters. Her eyes watered, but she blinked it back.

"I cannot. Can I do something else?" Twilight thought on this, "Hm...well, it's what I needed you to do...Big Mac! Shove your cock in her throat, don't stop until she's dead," she ordered, Mac stumbling over to Maud, weak from the constant spell and his attempts to resist it. "I would not do that-I will bite it off if I must," Maud intoned, Mac looking almost relieved that it would stop him from having to keep helping Twilight.

"Oh, could you?! He's so big and strong, I'd love to see how long it takes him to bleed out!" she enthused, as Mac's possessed body shoved his cock in Maud's mouth. She struggled despite her broken limbs, managing nothing more than a slightly humorous flopping about. Twilight thought so at least, giggling softly.

Mac held Maud's head to his groin, to the hilt in her throat. He looked at her apologetically, unable to actually vocalize his regret. She looked much the same, if so much more muted. She tensed her jaw, and he closed his eyes, not resisting in the least, although he did scream in agony as her teeth clenched, jaws used to chewing rocks easily meeting through his meat.

He pulled back, and she kept her teeth clenched, and he was grateful for it-he'd be able to bleed out and die, joining his sister. His cock tore raggedly, letting go with a tearing sound. He collapsed backwards, staring blankly at the roof as he waited. Maud spat the cock out, fixing Twilight with a blank, but somehow furious stare.

Twilight levitated over a quill and parchment, excitedly scribbling it all down as she observed, occasionally poking the comatose Mac with questions. He barely answered, but she listened raptly, excited-rather obviously, as she could no longer contain herself and mounted the hole he now had instead of a cock. She pressed in, moaning, somehow still magically scribbling notes on parchment, recording her own experiences in the moist, false cunt.

Mac winced, teeth gritting, desperately hoping she was forcing out more blood instead of blocking it and causing him to linger-which was, in fact, what was happening. Twilight turned her attention to Maud, a mad glint in her eyes. "I'm impressed, Maud...how do you stay so stoic? Even Limestone couldn't keep it up...and honestly...I don't think you'll be able to either, with the right encouragement,"

She levitated over, from a wooden storage box, a hammer and packet of nails. "It's almost too bad you didn't get to see Pinkie die-but I don't think that would have worked anyway...she enjoyed it, asked for it even!" she sighed, in loving memory, "What a true, true friend."

She paused, noticing Mac going into his death throes, and she savored the feeling of a deathgasm from the cock hole she was plowing, noting how different it felt from an asshole or cunt. She blew a massive load into him as he died, the last thing he felt was his sister's crazed killer's sperm shooting up through his body. He shuddered to a stop, and Twilight pulled out with a satisfied sigh, trotting over to Maud's infirm body.

Maud fixed her with a blank, somehow warning stare. "You are mad," she stated simply. "You should turn yourself in before it gets worse." "Oh, I could never do that! My research needs to be finished before I show Celestia, and then we can decided what Alicorn should be researched! I would offer, but well...I worry the others might not be as meticulous as they should be!"

Maud stared in response. Madness, absolute madness from this pony. She thought about Nightmare Moon, and wondered if this was some sort of weird Alicorn puberty. It seemed likely...she suppressed a shudder at what Cadance might become. Rape-crazed, no doubt.

Twilight stood on Maud-a hoof on each broken, now swollen, limb. She levitated a nail out of the pack, smiling at the single sweat drop rolling down Maud's forehead. "Oh good, you still have feeling in them!" the last of her misgivings and reluctance was being swept away in a tidal wave of ecstasy and knowledge. She pressed the nail to the soft underside of Maud's hoof, her limbs so twisted the bottom now faced up. Twilight hammered it in, Maud's body twitching involuntarily.

Maud tried to pull away, teeth gritted, but Twilight hammered it into the ground, not stopping until the head was flush against Maud's hoof flesh. She did it again, five times, imagining it was her own cutie mark star. A little...signature, if you will, on her work. Maud's face was strained with the effort of not screaming, or even crying.

Twilight noted all this down, as she repeated the star of nails on each and every hoof. By the end, Maud was gasping, eyes wide and pupils tiny. She was almost at her limit, and Twilight could tell, full of glee. She sat on Maud's back, rubbing her cock through the earth pony's mane, enjoying the feeling. She stood, rolling Maud onto her back, heedless of the nails still pinning her hooves to the floor.

The flesh and nails both began to part, making a horrid ripping sound. Maud made a gasping noise, deep in her throat, shaking violently now. Twilight ignored it aside from making a note of it, focusing on slowly turning and ripping Maud's hooves apart. Finally, Maud let out a desperate wail, bleeding out and internally, already so close to death.

Coughing up blood she wheezed, "End...it...please, no....more..." Twilight stroked her mane, gently. "Alright," she agreed "Time to end this experiment," But to Maud's horror, she levitated over the mangled remains of Pinkie's rear. "I...I still cannot-" "Oh you won't be, don't worry!" she assured her.

Twilight made sure Pinkie's pussy was nice and snug as she pushed it over Maud's muzzle, preventing her from taking anything approximating a breath. Twilight kept her muzzle shut with magic, the deceased pussy sliding over the muzzle easily, until Maud was up to her eyes in her sisters cunt. She struggled to bring in a breath, any little air that might have been in the corpse cunt quickly used up.

Even then Twilight didn't stop, forcing Pinkie's well used puss over her sister's eyes, shoving until Maud's head was in her tunnel, and then with one final heave, it popped right into Pinkie's womb. Slick with cum, it at least slid over the pony head easier than Twilight thought, and it made her wet and hard to imagine Maud trying to draw in breath and drowning in the alicorns cum deposits.

At first she tried to struggle, her broken hooves rubbing ineffectively against the dry, dead flesh, before letting out a broken, pained sob, and going limp, only her lungs trying to instinctively fight, to draw breath and live. Twilight pressed into Maud's pussy, thrusting calmly, enjoying the feeling of dying, raped cunt-it was rather relaxing to her now.

Maud's pussy spasmed randomly around her as her body fought, massaging the invading rape stick nicely. Twilight slid her hooves over the pony's chest, feeling the heart beat as it fought to live, taking yet more notes on it all. Maud's heart became erratic, her body giving one last, panicked thrashing in an attempt to dislodge the corpse around its face and live.

Twilight reveled in the deathgasm, thrusting as she enjoyed every moment of Maud's death, the earth pony's pussy practically sucking the seed from the alicorn's magicock. She obliged the hungry cunt, blowing a massive load of sperm as Maud slipped off the mortal coil, feeling rather proud to be fucking a science corpse of her own making. She kept going, her magicock staying hard, in order to blow a second load. She chose to pull out of the pussy, pressing into the tight tailhole and unleashing a flurry of thrusts, the asshole tearing at her rapid, uncaring and uncareful thrusts inside. The corpse was just fresh enough to still be oozing blood at this abuse, and it got Twilight off even harder.

She moaned, filling up the bowels as she had the womb, before yanking free with a satisfied sigh. She cast a spell on all of the bodies to keep them fresh, wanting to enjoy and display her experiments for a long time to come. She floated over all of her notes, settling down at a table to begin writing her book in earnest-soon, she'd be able to unveil it to Princess Celestia herself!