Part of her couldn't believe she was doing this. Lame, to the highest degree. But somewhere under the sharp talons and sharper tongue, and the ripped shirt of a punk band nobody in Equestria had heard of and the studded belts, there was a conscience in Gilda. And it had been stewing. She'd left it until nightfall to return to Ponyville. If she was going to make amends, she was going to be discreet about it. Bad girls can't be seen to say 'sorry'.
She paced outside the library. What were these... nerves? Why should she be feeling anxious about telling some nerd she thinks they got off on the wrong foot? She kneaded her claws and cursed under her breath and stopped just short of thumping the bark of the giant tree. She slapped herself in the face, then a second time for good measure. Get a grip, girl. She shook herself off, and banged on the door.
Some muffled sounds came from inside. A thump, a crash. Sounded like book-dweeb was calling for someone who wasn't there. A minute later, the door opened, and the lilac head popped out. Twilight squealed in fright when she noticed who it was.
Gilda continued to frown. What was she supposed to do, smile? "Relax, dw- uh... forget the last part. I'm not here to smash your windows or whatever."
"W-why are you here then?" Twilight held the door half-open, in case she needed to shut it in a hurry.
"I..." Gilda grimaced, then sighed. She really didn't want to do this. "I came to apologise for being a douchenozzle." Twilight's jaw went slack. "I don't know if you've noticed, but griffons and ponies don't mix much. Coming here was a bit of a culture shock."
Twilight let the door swing back a bit, so she wasn't holding it like a shield. "I see..."
"I don't... I don't know if I'm ever gonna actually be friends with any of you, because that just seems to be like, your national past-time, but I still feel like we had a bad start. So, uh..."
Twilight hummed thoughtfully. "Okay. I think I can accept your apolog-"
"Really?" Gilda blinked. That quickly?
"... your apology, if..."
"Oh."
"... if you can help me out with something."
Gilda rolled her eyes. "Sure. Okay, I guess."
The door swung open all the way. Twilight was in casual wear - loose t-shirt, jeans... she wasn't going anywhere tonight. "I think you can help me learn a bit more about griffons. You said it yourself - griffons and ponies don't mix much. There's a gap of knowledge there."
Gilda crossed her arms. "Hm. That all? That doesn't sound so hard. What do you wanna know?"
Twilight turned away from the door and skipped inside. "Come in, come in!" There was a decidedly gleeful ring to her voice. Nerd. Gilda stepped in and shut the door behind her. She took a look around to locate the windows in case she needed to bail in a hurry. The most comfortable-looking chair in the house slid into view. Vaguely reclining, big black leather upholstery on a metal frame, with big armrests and even a footrest. "Sit down! I have to get some stuff ready."
Gilda shrugged and helped herself. The dweeb was probably off to make tea and collate her question papers or something. She sprawled on the chair and stretched, and tried not to scratch it. It was a shame she had to be so careful, because she loved the feel of it. Matched her pants, even. Dirty thoughts crossed her mind as she rubbed her legs together, wringing a faint squeak from the tight, black leather around her legs. Some excited babbling from the next room reminded her of where she was, and she dispelled them.
Mechanical sounds startled her. Before she could react, leather straps had erupted from the arm and foot rests, and thrown themselves around her wrists and ankles and pulled tight. While she was still stunned, a second set fastened around her thighs and upper arms, and another one over her stomach. Fucking cheating magic! Her wings were pinned by her body and the curvature of the chair, and with her upper arms held down, her beak's reach was severely restricted. She had barely the time to form a 'what' with her mouth when the chair started moving. She was momentarily weightless as the floor below her descended from the warmly-lit library to the pitch-black basement.
She screeched. Her eagle-like cry just echoed off the walls, and she made herself wince with it. The hatch she'd descended through was already closed, so she probably wasn't going to be heard. She tried to reach for the straps with her beak, but it was just a little too far - she was only prodding her shoulder with the pointed tip. She heard banging, a door swinging open, and then the light came on. A spotlight hanging somewhere behind her and pointed on her, so she could see herself, but the rest of the room was even harder to see by comparison.
"Now, now, now..." Twilight walked into view, visible by the dim mauve light of her horn and the white of the lab coat she'd found in the last, what, thirty seconds? She was pulling on a pair of gloves. Rubber gloves, judging by the shine, and the snap when she let the stretched sleeve go. "Lots of tests to do!"
"Tests?"
"Oh yes! There's so much I can learn from you..."
Gilda seized up, clawing the armrests. That grin behind the goggles made her extremely uneasy. Her belt glowed pink, then started undoing itself. She squirmed and strained, but the straps were too tight to let her do anything. "Hey! What are you... get away from that!"
"Subject displays sense of personal space..."
"Fucking... what kind of tests are these, you little bitch?" The clipboard floated to one side while Gilda's pants peeled down to the first set of straps. Twilight undid each strap one at a time to pull the leather slacks past it, and left them crumpled at her knees. Gilda blushed, largely hidden by her soft face feathers. She wasn't wearing anything under the pants, and she still had traces of moistness from her brief distraction a few minutes ago.
"Subject is already aroused... arrived in tight leather trousers. Possible paraphilia?" Announcing her notes as she wrote them further creeped out the griffon. She growled and another cry of frustration escaped. Twilight winced. "Hm. Definitely going to need one of these..." Another bundle of straps appeared from the darkness. Gilda felt her face forcefully grabbed by the magic, and no matter how much she tried, the muzzle was getting wrapped around her face. When fully fastened, her beak was forced shut, and while she could still growl, the amount of noise she could make was severely limited. As if that wasn't enough, the muzzle clipped on to the headrest, so her head was immobilised too. Twilight moved the headrest up so her subject had full view of what was happening to her.
Twilight frowned at her clipboard, tapping the pen on her lip. "Hmm. Which test to start on first... Might as well get a few control readings." A device about the length of her arm floated over, with more straps hanging from it. Wires hung from the end and trailed out of view. She took the cap off, revealing a wobbling, jelly-like tip. She tested a couple of sliders. One made the tip swell to an alarming size, and then back down again, and the other made it buzz quietly, but shake violently. Gilda had no doubts about where that was going.
It was cold, and Twilight wasn't particularly careful about inserting it into her vulva, but when properly in place, she could feel the cool jelly surface touching just about everything that normally felt good. A thick bulb of the silicone was pressed to her clit, and when the size slider was moved all the way up, it filled her quite satisfyingly. Though, she still wriggled and trashed as much as she could against her restraints, to no effect. Twilight fastened the straps on the vibrator to the ones around her thighs and the one around her waist, so that it was held securely in place. Not that she'd have been able to dislodge it by herself anyway.
"Control reading one at 65% power, in three, two, one..." The slider went up, and the toy buzzed into life. Gilda screamed, but all that came out was a muffled whine. Every part of her tried to do something to get the intense vibration of the big jelly toy away from her, but it was like her body had forgotten how tied down she was. She writhed like she was being electrocuted, but all that was coursing through her was some of the most intense, inescapably powerful stimulation she'd ever had. She wanted to reject it, but her mind was having a hard time keeping a lid on it when her body was so forcefully pleasured. No matter how much she tried to fight it, her body couldn't lie. She needed it, badly. She was pent-up and her flesh was sensitive, and the sudden drilling was a sensory overload. She lasted about eight minutes, screaming and squirming all the way, before orgasm claimed her, and she soaked the seat in her fluids. The buzzing stopped as soon as she crested, leaving her to come down early from it, slightly dissatisfied.
Her eyes were unfocussed, and she was panting as hard as she could through just her nostrils. She wasn't listening when Twilight started babbling to herself about the results. "Interesting... these readings are so similar to equine that the same tincture might actually work... don't go anywhere!" Yeah, fuck you, she thought. The armrests were in shreds from her talons, but all she'd succeeded in doing was ruining a good chair. She wasn't left alone to stew in her shame for very long, because Twilight was back at the side of the chair, brandishing a bottle. She plugged it right into the vibrator and gave it a squeeze. Gilda felt a cool fluid surge from the surface of the toy all over, and it made her squeak with surprise. She clenched on it, and that only made her more uncomfortable.
While Twilight was jamming the straw of a squeezy bottle through the side of her mouth to force-feed her some water, she felt the slight numbness and ache of her orgasm fade away. Within a few minutes, she was as sensitive as she was before the first 'test', though now with the leftover hormones of her previous forced orgasm. Also, a vague sense of dread that this was not going to be over quickly. "Control reading two at 65%, three, two, one..."
Six. She endured six of these tests, and each one remained just as intense and mind-melting as the last, thanks to the sensitivity tonic keeping her from habituating. By the fourth one, she'd stopped listening to Twilight's insane scientific babble. She couldn't spare the focus or willpower to do anything. When the sixth one passed and Twilight walked away, she was just about ready to lose consciousness. Her eyes were bleary, tears streamed down her hot cheeks, and excess liquid dripped from the chair from the number and intensity of her climaxes.
Before she could retreat into sleep, Twilight came back. "You look like you're about to fade out... better go on to one of the more wake-me-up tests, eh?" Gilda mumbled a 'fuck you'. Twilight went into the darkness, and came back with a white feather in her hand. "First, preliminary investigation..." she said to herself, and started brushing the fibres of the soft tip around Gilda's restrained body. The neck got no reaction - too many other feathers in the way. Armpit got a twitch and a grumble. When brushed over her belly, she just growled. Then when she brushed it over the paws of her feet, Gilda squeaked loudly and tried to pull away, causing secondary squirming and whimpering from the way she twisted around the jelly vibrator still plugged into her. "There's the one..."
Gilda whined and looked on with helpless alarm as Twilight pulled things she couldn't see from the darkness. With her ankles strapped tightly to the chair, she had no option but to let Twilight strap mysterious devices to her paws, so that no matter what way she twisted them, the pads were still being gently brushed by something soft and hairy, almost like down feathers. They were already forcing her to twitch and murmur. Then she heard a click, and they sprang to life. The feathery fibres started rotating and swirling over her paws, occasionally getting in between the toes and just lightly running their soft touch over the surface. The tickling was unbearable, and she seized up in involuntary laughter - or, at least, the heartiest laughter she could manage in her state of heavy restraint.
"Okay, signs are stable, so... commencing tickle test at 65%, three, two, one..." The vibrator hummed into life again, and she arched her back in a feeble attempt to squirm away. The two sensations mixing was confusing at first, both of them competing to produce a physical reaction and what they were trying to make her voice do. Between the convulsions of muffled laughter and the heavy moans forced through her closed beak, she could hardly breathe. She became light-headed quickly, and the tears blurred her vision. She couldn't form any kind of clear thoughts. There was just the inescapable, maddening assault from intense physical sensation. Nothing she'd known before had even come close.
She lost all track of time. She felt like her brain was dissolving in forced pleasure and dripping out her ears. The tickling was keeping her just about lucid enough to resist giving in to another forced orgasm, but at the cost of further torture. It might have been ten or even twenty minutes when she gave up. She couldn't fight any of this anymore. Her last wilful thought departed, and she fully submitted to the headrush of sensation, and let herself climax. For a full minute, she exploded with the intensity of feeling. She wasn't sure if this was hell or heaven. She was so knocked flat by it that she didn't even notice the devices powering off after she hit her peak. She just stopped squirming and panted, staring vacantly into the darkness.
"Wow, I didn't think you'd make it that time! Twenty one minutes, five seconds..." Twilight absently scribbled on the page while squeezing water into Gilda's beak. This water was sweet and slightly fruity - she needed the energy. "Could be an anomalous reading though." Over a minute, she caught her breath, and was just about to fade from consciousness again, when the tickle pads started up again, and not a second later, the jelly toy began quivering again. With her will already broken, her reaction was less violent; less tugging at the straps, less clawing the shreds of leather at the ends of the armrests. She submitted entirely to the pleasure, embracing the tickling erotically as if the feathers were brushing her clit, and revelling in the nearly airless distress of trying to laugh and scream in ecstasy at the same time. Orgasm came quicker, in just four minutes, and was over quicker still, having not fought it to prolong the pleasure. She was almost disappointed, though no less exhausted.
The third, fourth, and fifth times were little different. She'd stopped trying to think, and let the pleasure happen to her, for forced orgasm after forced orgasm. Test number six (not that she was keeping count) started with the tickling, but the toy never came to life. She didn't notice much of a difference. Twilight mumbled something she was no longer fit to understand about Pavlovian conditioning, while getting a good look at her pussy, convulsing and leaking as if the toy was on. At ten minutes, she returned to that breathless delirium from the first test, and it dragged on, struggling to climax from delicate paw-tickling alone. By now, she wanted to. When it looked like she was about to pass out, the vibrator hummed into life, and she finished off almost immediately. "Paws conditioned into behaving like erogenous zones by test six... fascinating. I must look more into that at a later date..."
Gilda was amazed she was still conscious as the tickle pads were unhitched from her paws. She rolled her toes and muffled a moan. She rubbed her paws on the leather surface, keeping herself on the edges of her sexual haze. Her mind drifted into ideas that she'd normally find insane. She wanted leather socks, that she could just walk around in, and let them massage her paws... or boots with tickling gel surfaces on the bottom. She could strap them on and let them take her to heaven without having to do anything. She cooed and purred while Twilight went about checking things.
"Wow, would you look at the time... we sure got carried away with these tests!" The chair was soaked. No shit, Gilda might have said if she was fit to understand words. "Though, there is one more I think we have time for... I can leave it running overnight." A collar floated from the darkness and fastened around her neck. "Set power to 35%... and run." The toy hummed loudly, resuming its rapid massage of her hottest spots, but not as intensely as last time. She still forced moans through her nostrils and flexed her abs, trying to grind hips that wouldn't move. "See you in the morning!" The lights went out, and a door slammed, leaving her alone with her pleasure.
She could handle this. Light squirts of tonic every few minutes kept her from losing feeling, and she let herself drift into semi-consciousness. Time passed in an erotic oblivion, her pleasure slowly rising. She helped herself along by trying to knead her paws on the leather. But eventually, she felt something was wrong. She was still awake enough to know that her climax was surely imminent, and it had been for a while. She flexed to try and bring her waist up from the strap, she squirmed in her bindings, and screamed in frustration, muted to a soft whine by the muzzle. No matter what she tried, she couldn't reach the climax dangling torturously in front of her. So that was the test.
Dammit.
For science
Gilda was so tired. She hadn't slept. It was just impossible. The collar pinning her feathers around her neck refused to let her fall off the edge of this sexual torture into sweet release, and the bulbous silicone jelly toy spinning and buzzing and smearing her with sensitivity tonic refused to let her ignore the burning need. Worst of all, the thick straps were so tight, on her waist, knees, ankles, wrists, elbows, and face, that there was no way she could help herself out of this jam. All she could do was groan until her voice had become nothing, claw the leather armrests until the stuffing poured free, and saturate the seat in her juices.
So when the lights came on, they didn't wake her. They just added a layer of incandescent pain to the smear of needy aches and lust that had dissolved her mind overnight. Some primal part of her brain wrenched her eyes shut. Words she couldn't understand reached her from some bubbly morning person.
"Coming up on eight hours... how are you feeling, Gilda?" She had no idea if she was being addressed, so she didn't bother to react. A poke at her side forced a groan from her. "Hm... not completely braindead... that's a good sign! You're a fighter." She felt a pat on the side of her beak, and the toy finally shut off. Some deep part of her missed it already, but the last vestiges of her conscious mind cried relief. She opened her eyes to watch the purple blur walk around in front of the lights, babbling some things at her. Were they even at her? She couldn't tell. There sure were a lot of things around this room. She'd get a look at them tomorrow. Yes. Sleep. That was what she needed. Her eyes begged to be closed.
"... and after orgasm times under conditions of asphyxiation, I think you'll be ready for another couple of denial sessions, with increasing intensity. It's possible with enough conditioning that you might be able to climax with the control collar on, which is fascinati- Gilda? Are you falling asleep on me? Hello?"
* * *
It was just as bright where she woke up again. There was a taste of rubber in her mouth, her shoulders ached, there was some weird pressure on her wings, and her vulva felt raw. She was dry, at least - flat horizontal on a different leather surface. Dark ceiling was all she could see, and her neck ached to turn.
"Ah! Now you're awake." Gilda's heart sank. No demented fever dream was this. The dweeb was still there, clipboard in hand, maniacal grin on her face. "Since you were so bored by my orgasm and pleasure tests, I thought I'd give you something more interesting. Doesn't that sound fun?"
She blinked to clear her eyes and get a good look at Twilight. The lab coat was gone. Today, she'd equipped herself with a laboratory-grade corset to push up her cleavage, industrial-strength fishnets, sterilised thigh-high boots, and flame-proof latex gloves. Science indeed. Gilda began to pant in alarm and tug on whatever bindings were keeping her hands above her head.
"Aw, you're all excited! Don't pull anything too hard, or you'll mess up the readings. Now, let's get going, we've got a lot of tests ahead of us!"
Twilight went around double-checking the rack, making Gilda aware of each element in turn. The leather cuffs holding her wrists over her head, the belts binding her legs together and to the end of the rack, the wired pads nestled under her feathers hooked up to equipment she couldn't see, the gears and cranks around the rack... a cold shiver ran down her spine. She distinctly hoped that those parts of the rack wouldn't see use, but she knew that hope wasn't very realistic.
"Now. Hold sti- what am I saying. Of course you're going to hold still!" Twilight giggled, sitting next to her and leaning over her. She pinched her beak around the gag in it. Leather straps hung slack around it, and a tube ran from the gag over the side of the rack. Twilight fiddled with some buttons and switches out of Gilda's view, and there was a mechanical hum to her left. The gag swelled rapidly, leaking some excess air with a hiss from tube joint. Her tongue pressed down, and the rubber ball kept filling until it took up all of the space in her beak. Then, it kept going. She groaned as it pressed her lower jaw painfully away. It felt like it was going to snap right off, and she screamed.
No sick crack came. Her beak pressed up against the leather straps either side, limiting the gape of her jaw. The inflation of the bulb continued. With nowhere else to go, it pressed further back into her mouth, starting to make her gag. There was nothing to come up and nowhere for it to go, so nothing happened, other than making her writhe and wretch uncomfortably for a number of minutes, while the rubber pressed against all the inner parts of her mouth until they were immobilised and raw. Her eyes were already streaming from the pain.
"Hmmm... good jaw gape tolerance... evolutionary holdover? Not sure..." Twilight scribbled away on her clipboard. "While we wait for the sustained test to run through, let me just get a couple of samples..." She hopped off and returned a moment later with a pair of tubes. She jammed them into the machinery beside the rack, and pulled them up again. They came up with clear, corrugated pipes trailing from them. The devices themselves seemed to have suckers at the end.
It was only when Twilight planted the things on Gilda's nipples that she noticed something... off about them. She was sure that her chest puppies had grown a few sizes since the last time she saw them. Something in the water Twilight had given her yesterday? She could barely see her paws behind them, and she was lying on her back! The ache of her stretched out jaw distracted from any pleasurable sensations she might have gotten from the devices clamping to her nipples with vacuum suction and starting an internal pumping mechanism. White, creamy griffon milk started to spurt from them. The sight was bizarre to her - didn't she need to be a mom for that?
There sure was a lot in there. Her breasts visibly shrank from the milking, and her nipples grew at least half an inch along the tube. After a minute, they started to feel sore. It was less like they were gently being squeezed, and more like they were being pulled on by weights. The flow of milk eased off, from spurts to trickles, and finally nothing. As if she was sure there was more, Twilight left them on, and poked the flesh around to encourage it. It was tender and uncomfortable, and Gilda winced. Finally, Twilight rolled her eyes and released the suction. The tubes fell off by themselves, brushing the raw nipples on their way down.
"Hm... double the dose for tomorrow. Ensure solution is not saturated... could be tricky to reach minimum sample size every day if that's the case." She clicked her pen and set the clipboard to the side. "Now! Enough playing around. Time for some real tests!" Gilda squeaked. Those weren't real tests?
Twilight went up to the head of the rack and wrapped her gloved hands around a lever. It was one of twelve on a wheel, each one with a leather-wrapped steel handle. This was no crude, medieval torture tool - this was a sophisticated instrument of science! Twilight licked her lips, and started to pull. The gear ratios meant that lots of turning translated to little real stretch, but that only made it more satisfying. The ratchet and pawl clicked rapidly as the wheel spun freely, taking out the slack, and pulling Gilda's arms taut above her head. Gilda whined and struggled and writhed until the tension was enough to strip that privilege from her. Once taut, Twilight let go of the lever. It remained in place, keeping her griffon subject tightly stretched between the strap looped around her cuffs, and the mess of heavy straps fastening her ankles to the foot of the rack.
Twilight petted her on the side of the beak, her jaw still aching. The machine had dropped its pressure to barely bearable levels, and Twilight just tightened the leather straps to remove the slack, and ensure the pressure against the soft parts of her mouth remained firm. "This might get a little intense." Gilda whimpered her protest, but nothing distinct got out before the lever had turned another few notches. Now the stretch was on - her shoulders strained, her wrists and ankles felt tight, and her back twinged. Another few notches only made the mild pains louder, and her joints cried out for relief. She released a heavy groan through her nostrils, and tears began to stream again.
"Already? We're just getting started! Fine, one notch at a time, then..." Click. This was only worse. The interval of the lever climbing each notch was just long enough to stay one step ahead of the endorphins, keeping her on the descending staircase of agony. Click. Click. Click. The groan became a scream. Everything was overwhelming suffering. Her arms were going to pop right off, she was sure of it. Her body drowned in signals telling her that her shoulders were about to fail. This was going to be the end of her.
There was a snapping in her ears. It was a dry, open snap, not a wet pop. Her arms still felt disembodied and her shoulders stiff and burning. Somehow, the edge had been taken off the pain. It reignited, but in a distinctly different way. She gave a guttural whine, and her arms were rotated to her front. Numb as they were, they were still attached to her, wrists bound together still, with a severed orange strap around the chain. "See? Nothing to worry about. The strap has a failure tension just short of a pony's dislocation tension. Perfect for these tests!" Twilight patted her shoulders. They remained a burning source of agony. "Rest up for a minute while I set up the next test. I'd like to do more stretching, but I don't think you'll be able to take it." Gilda groaned, shuddering a sob. "No, I'm worried for your safety, you can't go again!"
Stress hormones mingled in her body while she waited. Her brain had decided the best way to cope with her arms being in such pain was to pretend they really had fallen off. She stopped feeling her claws, or being able to move them, but on the bright side, it dulled the pain from her shoulders. Minutes passed, and she closed her eyes. Maybe she could make this all go away... she might have napped somewhat in the next half an hour, but she was rudely awakened by Twilight clicking as she entered the room.
"You can't be falling asleep again, can you? Nothing pleases you, honestly." Gilda grumbled angrily. What was wrong in this bitch's head? Enough feeling had returned to her arms to feel Twilight returning them to their place above her head and fastening them to something, and the twinge of deep ache as her shoulders rotated. Fearing more stretching, she wriggled weakly and whimpered. Twilight placed a gloved hand on her chest, gently pressing her down. "Shhhh, shh shh. Relax." Gilda settled and breathed. Twilight was smiling at her in the most caring way she'd seen yet. "Or I'm going to have to get the muscle relaxants." Oh. That's why she was smiling.
A trolley had arrived with her. After a moment setting it up, plugging things in and testing things, she lined it up with the side of the rack, and craned four metal objects over Gilda, with a down-facing grate. She stopped and hummed, then fetched a leather blindfold. "Test one thing at a time, of course!" Gilda couldn't offer much resistance as she put it on.
The gag started to leak water at the back of her throat. She had no option but to swallow. Four dimly mechanical noises came from above, and her body felt like it was bathed in sunlight. It was actually... kind of nice. "Timer started... let me just get a reading." Twilight left something metallic between Gilda's breasts. It seemed to heat up quickly. Come to think of it, everywhere was heating up quickly... She took it off. "One-ten. That should do nicely! Hoo. These lamps are just spilling their heat everywhere. I'll be right back! I need a drink."
Gilda whined. Her feathers were already starting to feel damp with sweat. That's what the water was for! She tried to wriggle away to some cooler spot, but she was bound too tautly. All it achieved was moving her on to a spot where the black leather had heated up quicker than her body, pressing it uncomfortably to her bound wings, and in the time it took her to move back to her original spot, an inch away, that had heated up too. There was no breeze in here. Nothing to make her sweat all that effective. She barely needed sweat at all, since she was built for cold climes and high winds. Getting this hot was never a matter of course.
Twilight took her sweet time getting that drink. Maybe she'd been caught? She wasn't sure if that was good or bad. Maybe someone was coming to help her - but maybe Twilight had only been "caught" in her racy "lab gear" and was making an embarrassing explanation, and nobody was coming to the rescue. The heat was making it hard to think straight. It wasn't long before time was starting to blur, and her grip on consciousness was becoming slippery.
Water drizzled on her face, bringing her back to full attention, partly from the cold relief to her head. "Hey!" Twilight must have returned while she was delirious. "No sleeping on me!" A weak groan arrived in response, and a shuffle. Drizzles of more water, flicks to her beak, and pinches to her still-raw nipples kept her on the fringes of alertness, until it was clear that it would work no longer.
She didn't remember the heat lamps turning off, or being pulled off the rack to hang from the ceiling, or Twilight talking about doing one of those pick-me-up tests. She only snapped back to consciousness when she felt the sharp snap of a leather strap across her exposed butt. When did that become exposed? She grunted when the world suddenly became real again, and her rump erupted in fire. Smack. Smack. Six spots on each cheek, again and again, with medical precision. Each strike made her sing - after a fashion. The gag still filled her beak to an uncomfortable degree, her shoulders still ached, now also burdened with taking her weight, and her head still ached from the heat... by now, this pain was mild. Even pleasurable. Yesterday was heaven by comparison. The whipping rated about average.
She wasn't sure if she'd have lasted an hour without the prior sensory overload, but she was grateful to be unhitched from the ceiling and let crumple to the floor. Her ass throbbed, and she could tell it was red. All screamed out, she just passively accepted Twilight picking her up and moving her around. She floated into the air, the gag came out, and the cuffs came off. There was a tender purr in Twilight's voice as she handled her. "Since you've been so good today, let's finish with something kinda nice, eh? How does that sound?" A groan came back.
Setting Gilda down on what seemed to be a leather-upholstered lawnchair, Twilight retrieved and applied her "pajamas" - a heavy rubber leg-wrap with four belts around it, an equally heavy rubber straitjacket, and a gas-mask-like hood. The eyes were blacked out on it, it covered and plugged her ears, and the internal form of it kept her beak clamped shut. Once all these were tight on, a loose rubber sack enveloped her, from paws to neck. All this was pleasant - cool, reassuring. Then the sack began to hiss. Loose sheets filled out with air over the next minute. Folds worked out, and then she found herself immobilised between two beds of air above her and below her. Exhilarating, almost. But then it kept going. Breathing began to become difficult. Her legs pressed uncomfortably tightly. Her still-raw breasts felt like they were being crushed, and soon she couldn't breathe in to even whimper from discomfort. It settled at this tightness, the compress enough to render all struggles null. Occasional heavy presses in some places made her whine silently and wince. Was Twilight sitting on her?
On the verge of blacking out, the pressure released her. She panted and gasped for air. Twilight remained awfully silent - but maybe that was just the earplugs. The full release of pressure revealed that Twilight had in fact been lying on the inflated sack, and came to rest on top of her.
She pulled a pair of boots on to her, and strapped them on firmly. The cool gel on the bottom was a welcome relief, even though it tickled her pawpads. Wait, tickled? This couldn't be good. Or it would be very good. She had no way of telling. At once, the pads began to spin, and the air tube in her mask closed. She drew a breath to laugh - the first good feeling she'd had all day - but nothing came. Her head was already swimming, and she went instantly to the precipice of madness. Her chest heaved and shuddered. Her legs writhed in their binders, and her pussy began to dampen the seat. She lasted a mere ninety seconds before the automatic blackout prevention fed her air and shut off the tickle boots. She panted and gasped for everything she could get out of the tiny tube. All too quickly, the cycle started again.
After the sixth repetition, she was truly spent. She barely clung to consciousness as it was, and anything else would send her over. Twilight smiled, stroking her feather crest. Flicking her nipples through the straitjacket to keep her whining in discomfort, but caressing her nonetheless. An open tube emerged from a circular panel on the floor. It dripped with water, slid on metal rods, and tubes and wires hung from it. Lifting Gilda up again, she placed her in the tube, hitching the mask, straitjacket and leg binder to the metal skeleton of the tube, and connecting the mask to a breathing tube. She said a "see you tomorrow" that Gilda didn't hear, and the tube sank into the floor, immersing her in water.
After the brief panic of expected asphyxia that never came, she settled down. The water was... cool. It soothed her injuries that made her whole body feel like it was slowly burning from the core. Ordinarily, the restraints would make her restless, and the dark silence would unnerve her, but between how exhausted she was and the gentle floating, it meant one thing: sleep.
* * *
Deep, dreamless sleep followed. She had no energy to do anything else. Even waking was questionable. Without clocks or daylight or anything at all, she had no idea whether she was supposed to perk up for imminent release, or try and rest some more ahead of an exhausting day ahead. Part of her didn't want to wake up. As time dragged on, further sleep became more and more difficult. At some point, she had a panic, and began to thrash. Her talons couldn't cut the rubber and the straps kept her bound too securely - all she did was wear herself out and scream for nobody but herself to hear. She eventually settled, panting and sobbing, and returning to rest. She couldn't see the timer on the top of the tube, keeping it locked, even from Twilight, for a minimum of twelve hours.
The beep above that she couldn't hear signalled the end of the minimum isolation period. Another hour passed in semi-conscious oblivion. The water seemed to get thicker, more viscous. Not much - but enough to feel the difference as it circulated between her legs, under her tail through the jacket.
She felt movement, and the mechanical hum felt deafening. She felt the water pressure drop, and the level descend over her head and shoulders, and down her body. It stopped supporting her, and left her hanging from the straps. Magic removed them and lifted her through the air. The boots slipped off her, the leg binder unwrapped, leaving her legs hanging free, and the straitjacket came off. Her arms and wings didn't want to move, even though they could. They just hung limply as Twilight removed the gas mask hood. Stunned by light and sound, she clamped her eyes shut and winced at every little noise, and her beak hung open.
"Did you sleep well?" The dweeb was chipper this morning. All Gilda managed was a limp groan. "Excellent! Let's get on with today's tests." Her nude body floated through the air to somewhere, beginning to shiver from the cold. She dripped the thickened water behind her, her wetness magnifying the coolness of the room. Her legs were pushed together, and something tight slid along them. More to the point, it stung where it touched. It brushed her here and there at first, but the further it got along her, the more of her was in contact. Her legs were eventually parted and pulled down two separate sleeves, finally wrapping them snugly. The skin of her legs was now on fire. Every pain receptor seemed to be firing constantly, only whatever she tried to do to get away from it, the magic held her tightly, and nothing she could do would get her away from it. The tight layer of pain continued up her body. There were sleeves for her arms, pockets for her wings, and a tight neck, ensuring that everything apart from her head, claws, paws and tail had this stinging surface clinging to it. Her breasts had swelled in size again, filling the pockets in the suit, her nipples under access zip.
Twilight lowered her over the rack and dried her feather crest with a towel. Gilda squirmed and groaned, her body trying to get away from the sting, but failing. Twilight walked around her, continuing to work. "The tonic in that water should keep the suit gliding and functional all day. Let me know if needs a booster, okay?" No distinct response. She slipped her hands into leather mittens to keep her talons from tearing the suit, and began strapping her to the rack by ankles and wrists again.
Gilda finally chanced opening her eyes. The suit she'd been slipped into was latex, she guessed, by the elasticity and the shine, and red. It stung where it was pressed to her, which was everywhere, and when she let it sit, and when she moved. There was just no escaping it. Magic forced her head back and her beak open, and the rubber bulb gag slipped in. Panic set in. "Oh! Almost forgot." A silicone tongue-shaped thing covered in nubs floated into view. A zip in her crotch opened that she didn't know was there. She was still sensitive enough to squeal as it slipped in. Bigger than expected, it wormed all the way in to her vagina, filling it deep. The zip closed up, and the tightness of the latex kept it hilted inside, and pressed a secondary nub to her clit. At least there was some pain relief - it began to vibrate gently as soon as the zip closed.
With the extra layer of constant pain, everything blurred together. The intense spikes of pain from the near-jawbreaking stretch of the gag, and the no-less-terrifying moments of agony as the rack threatened to wrench her arms off, were less overwhelming to reach and come down from, but the suit kept her from ever getting full relief. Most peculiarly, the vibrator seemed to match the intensity of the pain, delivering her a confusing mixture of messages. At the height of the rack's stretch, it was loud enough to hear, and her scream took a detour into a moan halfway through. The milking was the greatest high of pleasure. The vibrator seemed to ramp up as the pumps sucked away, leaving her writhing and moaning despite herself. By the time she was sucked dry, she was humping the air for more.
The heat lamps were too much to bear. She passed out within minutes, the discomfort overwhelming. Twilight tried three times to keep her conscious under them for an hour like yesterday, but every time, she lost consciousness quickly. With a sigh, she moved on to the whipping, and made a note to double the pressure test somehow. With her pain sensors already firing, the whipping, even if more vengeful and intense than yesterday, seemed less present. Duller. The suit smoothed out the highs with the lows, leaving her in this constant mild agony, with shocks of vaginal vibration when she was struck. Her head hung limp through it, giving only weak whimpers and shuddering when she was hit.
Twilight made good on her note to double the pressure test in every respect. After being straitjacketed, masked and having her legs bound, like yesterday, pain suit left on underneath, the inflatable sack pumped up to twice the pressure. There were twice as many belts around it to even out the crush, she was pressurised for twice as long, and after deflation, she was put through it all a second time. At full pressure, she tried to scream, only there was no air in her lungs to. The omnipresent agony of her entire body filled her every thought - but for the tiny amount dedicated to the silicone tongue squirming away at maximum power.
She didn't move after the pressure test. She was still breathing - just about. When the tickle boots went on, she could only squirm and shiver weakly. With something of a wicked smile, Twilight chained her to the rack in the tube and lowered her into the water, tickle boots still squirming away. Whether anything would be left of her in the morning was another matter.
* * *
Twelve hours of madness followed. Gone was the restful calm of black silence and the soothing of the cool water suspending her. She squirmed involuntarily from the unceasing tickling, unable to escape the burning sting over her whole body, or the confusing, nagging pleasure in her loins. There was no way she was reaching a climax from it, it was too weak... but it was still enough to keep her from sleeping.
She didn't even notice when morning came. Consciousness became meaningless. Her breathing was weak and staggered as the mask came off. Twilight peeled the suit back, removed the boots and slipped the vibrator out, and the nothingness was bliss. She shivered on the rack as she was dried, her wrists and ankles pulled back, and the gag inserted. Gone was the panic and whimpering - just laboured breaths. Then something interesting happened as the tests started.
As the rack inched back, she moaned through her nose. A needy, pleasured moan, that only grew deeper and more desperate the tighter the rack got. Tears streamed out, but so did vaginal fluid. Was she really this readily conditioned. Scribbling on her clipboard, Twilight left the rack just short of the tension cord's snapping point while she took notes. Then, she fetched the orgasm control collar from the other day and slipped it on to her subject. She was going to need it.
The gag stretching got a similarly mixed reaction, as did the milking. The heat lamps did nothing but make her squirm and whine in need, rubbing her thighs together. She laughed during the whipping, between moans of mixed anguish and delight. The compression was a lot like the heat lamps, only silenced by the crush on her chest. And the breathless tickling, well... the collar proved its usefulness, as Twilight was quite sure she was on the edge of climax throughout.
Relieved of her mask, her straitjacket and binder, she was placed on the rack loose. She'd stopped fighting back. Twilight removed the brakes on the rack, and wheeled it behind her.
"You've been a fantastic subject, Gilda. I'm going to be poring over this data for weeks, at least! You have no idea how much you've advanced the study of griffon physiology." A weak groan came back. "It's time for you to get some rest. You've earned a lot of it." A door opened, and they passed through it. The hall was dimly lit, with coloured panels lining the walls. A figure seemed to cut a reflective form in each, like it was part of the panel. A lit up label went over each, matching the silhouettes - pegasus, earth pony, unicorn, changeling, zebra, buffalo, things Gilda wouldn't even recognise if she was fully alert... and an empty panel near the end. A sheet of latex hung loose on the floor, from a pipe frame on the wall with another sheet behind it. Tubes stuck out of the bottom and hung from the top. The label at the top said "griffon".
Magic lifted her up from the rack and pressed her back to the wall, pinning her wings. Twilight thought for a moment, looking at the sharp things over most of her body. Then, she took a thick set of straps and wrapped it around her beak, putting a blunt cap over the pointed tip, and threading food, air, and water tubes into it. Similar mittens to before slipped over her hands after balling them up, this time inflating them into thick balls, putting two layers of rubber and a thick cushion of air between her talons and escape. As for the claws on her paws... Twilight decided the tickle boots would do. She left them on low, getting a squirm from Gilda as she was pressed to the wall. After attaching the crotch strap for waste collection, Twilight zipped up the panel, and pressed a button. The air sucked from between the two sheets, until she was sealed between them, airtight. Only the outline of her body and the tubes running two and from it evidenced that she was there. The quiet hum of the tickle boots kept her trying to wriggle, but in the dry rubber prison, there was no moving.
Twilight walked away with the rack, smiling. "Don't worry about getting the apology around. I'll pass it on to Rainbow Dash." The door shut behind her, and the lights went out.
