An Unusual Appointment

It was a bright and cheerful Saturday afternoon, the weather perfect for enjoying the great outdoors. Cinnamon Twist wasn’t enjoying the outdoors, nor had she all day. She was instead squirming awkwardly in a hard plastic seat in the corner of the mercifully empty hospital waiting room, as she had been for almost thirty minutes. Squinting past the harsh lighting, she looked at the small black-ringed clock in the corner of the room for the dozenth time. Not even thirty seconds had passed since she last checked. Glancing up at the white coated nurse manning the reception counter, she nervously did her best to straighten her own white coat as she once again regretted coming to the hospital in the first place. Sure, it had hurt plenty when it first happened, and was still aching gently when she worked herself into enough of a panic to risk going to the hospital, and was still a dull throb when she had embarrassedly murmured why she was here to the completely unfazed nurse at the desk, but now the pain had completely gone. Glancing at the clock again, she wondered if she could slink off and find some place to curl up and die of embarrassment.

“Miss Twist?” Oh. “Could you come here for a second?” Nevermind. It was too late.

Gracefully stumbling off the uncomfortable chair, she reluctantly trudged her way to the front desk. “Yes?”

The nurse deftly shook a large pill out of a bottle and held it out to her over the counter, along with a small cup of water. “This is Clean-Out. Have you ever taken it before?”

Taking the suddenly intimidating pill in her trembling magical grasp, she nodded. “Yeah.”

“Have you taken it in the last 24 hours?”

Cinnamon nodded mutely; her white coated face doing its best impression of the ruddy mane she was trying not to hide behind.

“Do you know how long ago you took it?” The nurse’s dispassionate tone provided a sharp contrast to the practically paralyzing subject matter which helped to calm Cinnamon’s frazzled nerves somewhat.

Glancing at the clock, she did some quick math. “A little over two hours now.” Perfect! Her voice didn’t even shake!

“You should still be good then, but it can’t hurt to take another one. Just remember to avoid taking more than three in a six-hour period.”

Nodding, Cinnamon quickly downed the pill, her brief bout of confidence quickly waning as she realized what taking Clean-Out meant. Before the full implications could settle in, the nurse interrupted her train of thought with an outstretched hoof, pointing at the door to the left of the desk. “Go through that door, Dr. Stable should be waiting for you in the last room on the left.”

“Thank you, Nurse Redheart.” The nurse just waved her off, returning to the small mountain of paperwork on her desk. As Cinnamon turned to head through the door, she missed Redheart quickly gulping down a pill identical to the one she just took.

Halfway down the somewhat short hallway, the pill took effect, causing her to shudder uncomfortably at the strong tingling sensation and sudden emptiness she felt throughout her gut. Swallowing, and steeling herself once again, she continued her measured march to the last door on the left. She managed only a brief pause before knocking, wincing at the decidedly male voice ringing out a cheerful welcome on the other side. “Come on in and make yourself comfortable, Miss Twist.”

The stallion, wearing a long doctor's coat with a small name tag proudly identifying him as Dr. Stable, MD, gestured to the even less comfortable looking plastic stool sitting next to the desk he was seated at. “We’re going to start with a basic health screening, so if you wouldn’t mind holding out your left foreleg…”

She obediently held her leg out, wincing slightly as the blood pressure cuff was firmly cinched on. “Wait, why are you doing this? Isn’t this normally a nurse’s job?”

“We’re always a little short staffed on Saturdays, and I tend to prefer a more… personal touch while dealing with patients. Also, I’m bored. You’re the first patient we’ve had all day.” Pumping the squeeze bulb quickly with his magic, he held his stethoscope to the crook of her leg, listening carefully as he slowly released the pressure. Removing the cuff when he finished, he pulled out a pen and quickly jotted down the results, glancing up as he did so. “Does your family have a history of high blood pressure?”

Put on the spot, Cinnamon blinked, trying to recall. “Uhh, I think my aunt on my dad’s side has it, but I can’t remember if she’s a blood relation or not. Sorry.”

“No worries. Your blood pressure is a little higher than it usually is, but it’s still well within normal.” Picking his stethoscope back up, he stuffed the earpieces back in. “Hold still a moment, I’m going to check your heart-rate and breathing.” Leaning forward, he placed the diaphragm against her sternum, causing her breath to hitch due to his proximity. He politely ignored this, simply staring at the clock on the wall as he counted. After fifteen seconds of near silence, he moved the diaphragm to her right flank, just behind the shoulder. “Breathe in… breathe out…” Moving to her left flank, he repeated his instructions. Leaning back, he took the earpieces out and hung the stethoscope on a hook. “I’m sorry if I make you uncomfortable, Miss Twist. Your heart-rate is a little high. Your lungs sound clear and healthy though.”

“It’s okay. I’m just a bit nervous.” Cinnamon bit her lip, scanning the anatomical posters on the wall in an attempt to avoid eye contact.

“That’s perfectly understandable. Now, if you’ll place this under your tongue until it beeps, I’ll check your ears real quick.” Cinnamon nodded, taking the plastic wrapped thermometer and gently placing it under her tongue. “Your left ear looks good, if you wouldn’t mind turning your head, perfect… This ear looks good too.” Leaning back to record the results, he glanced up at the thermometer as it let out a piercing beep. “Perfectly normal. You’re a perfectly healthy young mare, Miss Twist, so what brings you in today?”

She froze. Her blush, which had been slowly receding, returned in full force. “I, uh, well…” She risked a glance at Dr. Stable, seeing a kind and professional expression on his face as he sat patiently, waiting for her to finish her story. Steeling herself once again, she squared her shoulders, took a deep breath, and started again. “I was, uh, reading a, uhh… book, and I’ve always been curious, and so I decided to try it, so I used my small one, and got it lubed up as best I could, but I don’t have any actual lube, so I just used my own, and I went too far too fast, and suddenly it hurt a lot, like pretty deep in there, and I panicked, and after cleaning up as best I could, I came here as soon as I could, but it doesn’t hurt anymore, but I’m still kinda scared I might have hurt something, or caused damage, or something, but now it doesn’t hurt, so I almost went home, but I’m still afraid-” She finally ran out of breath, gasping for air as she tried to get her furious blush under control.

“Hey. Take a few deep breaths, I’m going to need you to repeat-”

“I SHOVED A DILDO UP MY BUTT AND I THINK I MIGHT HAVE HURT MYSELF!”

Panting from her outburst, she stared at the floor in front of her in shock, dying of embarrassment and wishing nothing more than to sink into the ground.

“Hey. Miss Twist. Look at me.” It took her a second, but she finally managed to glance up into the kind, caring eyes of a medical professional. “It’s okay. It’s perfectly natural to experiment there. You simply didn’t prepare yourself properly.” Standing up, he lowered the examination table as low as it would go. “Now, to make sure that you didn’t hurt anything, I’m going to need to do a visual inspection. If you wouldn’t mind standing up here?”

Her face still burning, she took deep gulps of air as she worked to quiet her racing heart, shakily heaving herself onto the shin high table as Dr. Stable trotted over to a cabinet and pulled out a large syringe. Glancing up at her, he said, “This is Thaumitized Prolaforaminisate B, or, as the over-the-counter version is known, Loosinal. It’s an advanced muscle relaxant and elasticity enhancer that will allow me to painlessly check for lesions and abrasions. Do you have any questions, Miss Twist?”

Gulping, she shook her head, staring at what had to be a cup and a half of ‘elasticity enhancer’, whatever that was. Based on his next words, she could hazard a guess though.

“Now, Miss Twist, if you wouldn’t mind turning around and raising your tail for me...”

Cinnamon stood, frozen to the spot for what felt like hours, staring at the syringe of what could only be described as magic butt lube. Dr. Stable, for his part, patiently waited for her to turn, maintaining a perfectly professional demeanor even as he held four hundred milliliters of magic butt lube in his telekinetic grip. Finally, Cinnamon’s legs unlocked and she slowly turned around, facing the wall away from the door and staring at it as if sheer concentration would cause her to teleport to the other side.

“Miss Twist, I’m going to need you to raise your tail for me.” After a long moment, she managed to will her tail to jerkily flop over her back, exposing her most intimate of areas to a near total stranger. Dr. Stable, making sure she wasn’t watching, took this time to admire her form. Two nearly flat teats were nestled between her hind legs, barely visible as she held her legs together tight. Just above them there was perched a thick pair of meaty ebony lips, still slightly crusty from being soaked recently and not properly wiped off, though they were bone dry now. A small, taught, perineum away rested her tight ponut, a clenching ring of flesh the size and color of an Oreo nestled just below a lightly furred and twitching dock, puckered so tightly that there was no hope of entry. Even as he took it in, the muscled ring relaxed slightly, just to clench so hard that it pulled the skin of her dock with it. Watching for a few more seconds, he marveled at the puffy entrance as it twitched in time with her heartbeat.

Tearing his eyes from the mesmerizing sight, he squeezed a small dollop of transparent goo from the syringe into his telekinetic grasp, bringing it quickly up to her squeezing back door. As soon as the cold substance made contact with her tailhole, she gasped, her tail whipping down on instinct, her dock smearing the substance in as it thrashed about, whipping her long red tail in the startled doctor’s face. Blushing madly, she stammered out an apology as she tried to get her tail under control. By the time she managed to pull her tail back up over her back, Dr. Stable was met with the surprising sight of moisture between her lower lips. Cinnamon grimaced in embarrassment, letting out a small gasp as the skin of her dock and anal ring started to feel warm and tingly, and seconds later she fought to hold back a quiet, strained moan as she felt her tailhole start to loosen, the tingly, warm substance slowly making it’s way deeper into her as her ponut relaxed. Dr. Stable was snapped out of his trance by the soft moan, pulling his gaze from her swelling, dampening lips just as the puffy ring of flesh above it started to unclench, the tightly wrinkled center softening as the muscles lost their tension.

“Are you okay to continue, Ms. Twist?” His eyes never left her softening ring, watching as each small wrinkle slowly smoothed leaving just the permanent wrinkles to gently unclench, widening from sharp gouges to gentle valleys.

After a few seconds of panting, Cinnamon felt adjusted enough to the alien sensation to nod, letting out a breathy grunt of affirmation.

Softly lighting his horn, Dr. Stable began to gently rub the ‘medicinal aid’ into her backside, delicately pulling the ring apart, squishing the relaxant deeper into her loosening depths.

Cinnamon, for her part, groaned and shuddered, the unexpectedly wonderful stimulation proving too much to ignore. A soft moan escaped her lips as her back door was stretched further, allowing the warming liquid deeper into her near-virgin depths. As she felt her anus finally relax, Dr. Stable stopped massaging her pillowy donut, simply holding it slightly open for a few seconds.

Dr. Stable gazed into her darkened depths, admiring the stark transition from the white hue of her coat to the deep grey of her genitals to the fleshy tones of her insides, just barely visible in the pencil-wide gape of her still softening ponut. “I’m going to need you to stay relaxed. I’m going to insert the nozzle of the syringe and on the count of three, I’m going to empty it.”

Cinnamon held her breath as the smooth nozzle slid past her incredibly sensitive ring, the magically stimulated nerve endings in the lubricated flesh of her back door practically burning at the friction they experienced. Against her will, and to her surprise, her nethers clenched in a sudden, powerful wink, spattering the tile floor just as the short nozzle bottomed out inside her twitching passage.

Ducking to the side, Dr. Stable dodged the spatter of natural lubricant, mildly shocked at just how into it his patient was, small streams of almost clear liquid now freely dribbling down her thigh. Shaking his head, he slowly counted, “One… Two… Three”.

Cinnamon groaned at the rush of cool liquid that left fire in it’s wake as it streamed into her butt, her front legs buckling as her hind hooves spread, leaving her in the perfect mating position, presenting everything she had to the world. All embarrassment was gone though, lost in a haze as the new angle allowed gravity to assist in dribbling her new favorite liquid deeper into her canal.

Carefully pulling the nozzle out, Dr. Stable watched as her ponut strained to keep it in, her chemically relaxed muscles weakly clinging to the nozzle and following it out before the heavy lubricative coating did it’s job and let the nozzle slide out, her asshole failing to close after it, left slightly agape as it rhythmically pulsed, as if attempting to close.

Grabbing a pen light from a stand, he pointed it at her twitching ponut, revealing the receding shine off the surface of the goo as it drained deeper into her, dodging once again as she winked once more, her bit sized clit holding itself out for almost half a second. Even as she powerfully winked for a third time, her tailhole never closed, the puffy ring of flesh sagging wider every second as the advanced lubricant did its job.

“Alright, I’m going to begin dilating your anus now, let me know if things become painful or uncomfortable.” A muffled moan was all the response he got, her head resting on her forelegs as her now similarly relaxed dock tried its best to flag higher, even as her tail simply flopped against her back.

Gripping the ring of her ponut, he began to slowly spread her, chewing on his lower lip as more and more of her forbidden tunnel was revealed. Easily reaching a nearly four inch diameter, he changed tactics, halting the spread of her ponut as his magic reached deeper inside, stretching and massaging her rectum as it went.

“Oughh CelestiaaAH!” Cinnamon groaned as she felt his probing magic reaching deeper inside of her, the stretching of her anal walls incomparable to anything she’d ever felt before, the tingling of his magic seeming to chase the warmth of the magical lube deeper into her before, after what felt both like an eternity and not nearly long enough, it finally stopped, feeling like it had opened up a clear shot to her very core. She groaned once again, not caring that she both looked and sounded like the biggest buttslut in the world.

Dr. Stable looked down the long, lubricated, fleshy tube, deep into his patient’s core, having stopped just shy of the bend into the colon. Resisting the urge to reach out and touch it, or to lick the veritable faucet between her legs, he began the slow process of stretching the entire length of her rectum wider, though he paid special attention to stretching her sensitive ponut even more, the ring of muscle having given up the fight entirely. He licked his lips, watching the once impossibly tight orifice spread and stretch until it was a smooth, wrinkle free ring, and then just keep spreading. Once he had reached a diameter of nearly six inches along the length of her rectum, and almost seven at the entrance, he stopped, ignoring the moans of protest from his patient.

Taking to probing along the lower wall of her rectum, ‘accidentally’ massaging her G-spot, he guided the flashlight around her walls, visually and magically inspecting every square inch. “I see no signs of any damage whatsoever in here.” He repressed a laugh, imagining a slight echo as he talked directly into her gaping ass.

“In fact, it looks very healthy in here. I would say that you would have no problems with insertions provided that you properly prepare yourself.” Cinnamon moaned loudly, feeling his hot breath against the walls of her ass, imagining just how close his face would have to be to her oversensitive rear end to be able to breath directly on it. “Do you have any questions before we conclude this checkup?”

She froze, going silent for a half second as she processed the fact that this was the end before wildly thrusting her ass backwards, practically shouting, “Please! Stretch me more! I need it!”

Chuckling, he gazed deep into her quivering rear end, “Alright, if that’s what you want, Miss Twist.” With that, he quickly stretched her rectum to match the width of her ponut, her deep moan of satisfaction telling him that that was indeed exactly what she wanted, the rapid winking of her clit simply providing further evidence. Continuing to stretch the walls of her rectum, he began to magically knead and stroke her ponut, forcing it closed and stretching it open again over and over, earning a loud moan every time.

The feeling of her ponut receiving such abuse was absolute nirvana to Cinnamon. The grinding and rubbing of her sensitive flesh as it was compressed together, followed by the euphoric stretching sensation as it was spread back out again overloading her brain, incoherent gibberish exiting her mouth in a near constant stream. The buildup of tension in her core began to overwhelm her, bubbling forth in the most massive orgasm she’d ever had in her life.

Seeing his patient nearing orgasm, he stopped playing with her ponut, resuming simply stretching it to its absolute max, the faint magical glow of the advanced lubricant when she reached a mind boggling ten inches across letting him know that it had reached the limit of what it could do, her ponut now just a thin, impossibly stretched ring at the end of a now perfectly smooth tube, excepting the gentle swells of her uterus and ovary.

And then she came. Hard.

Dr. Stable received a face full of mare cum, despite his best efforts, even as her orgasmic wail echoed around the small room, her clit launching out and staying out as her entire body locked up. After almost thirty seconds of continuous orgasm, she collapsed, exhausted.

Dr. Stable, having finished what his perverted sense of duty demanded of him, pulled out a cleaning kit, mopping up the mess that Cinnamon had left, cleaning the nearly unresponsive pony herself afterword. She groaned lightly as he carefully cleaned out the entire length of her gaping rectum, even going so far as to carefully scoop the last of the lube out of the depths of her colon, her swollen lips winking one final time as he did so.

As he finished cleaning the examination table, Cinnamon reached back, feeling the edge of the loose loop that used to be her tight tailhole, as if to confirm what she was feeling. Her face suddenly fell, the full extent of what exactly had been done to her ass sinking in. “I’m ruined.” She croaked hollowly; her voice still hoarse from her previous vocalizations.

Glancing over at her with a compassionate smile on his face, he responded gently, “No, you aren’t. Thaumitized Prolaforaminisate B is a forced elasticity enhancer, which means that as soon as the effects wear off here in about two hours, you’ll be just as tight as you were when you walked in the door."

“Really?” She asked, hope in her eyes as she pulled her hoof, which had sunken all the way to the fetlock into her asshole accidentally, out of her yawning cavern.

“Yes, though in some very rare cases, it actually reverts to being even tighter than it was before. Now, is there anything else you need from me, Miss Twist?”

Cinnamon looked around, as if suddenly reminded that this was actually a hospital room that she had just cummed her brains out in. “Uhh, nothing that I can think of.” She stood up, taking a step towards the door before she paused, “You said that this stuff was over the counter?” She blushed and looked away, as if she wasn’t talking to the stallion that had just brought her to an anal orgasm as he stared at the bend into her colon.

“Thaumitized Prolaforaminisate A is, though you’ll find the effects aren’t nearly as strong and they don’t last nearly as long as the hospital use only stuff. It should still be sufficient for your needs though.” He sat down at the desk, starting into the post visit paperwork he would need to fill out, before glancing back up at her. “Oh, two things, if you want to pick it up over the counter, just look for Loosinal, L-O-O-S-I-N-A-L, and it usually comes in a quart size, though you’ll have to pick up an applicator separate.”

“Oh, okay, that works.” She headed towards the door, opening it before he stopped her again.

“And thing two, send Nurse Redheart back, I’ve got a question about where she filed some of the paperwork.”

“Alright, I can do that.” Turning back around, she awkwardly limped back down the hallway, her stiff and sore legs certainly needing a good stretch.

Nurse Redheart glanced up at the sound of approaching hoof steps, rapidly pulling her hoof out from between her butt cheeks, stifling a moan as her hoof drug across the sensitive rim of her ponut one last time. Regaining her composure, she was back to lethargically doing paperwork just as Cinnamon Twist stepped back though the door. Glancing up at her, she asked, “All done?” Cinnamon nodded, a blush creeping across her face. “Perfect. If you’ll sign out here, you’re free to go.”

Picking up the provided pen, Cinnamon deftly signed her name before remembering the task she’d been given. “Oh, Dr. Stable wanted to see you. Something about paperwork.”

Redheart groaned with practiced disgust. “I already told him that I moved those files to the new filing cabinet. Whatever. I’ll be back there when I’m done with these.”

Nodding with satisfaction at a job well done, Cinnamon gave the grumpy nurse her well wishes before turning to the door, unaware that Redheart’s eyes had locked on to her rump the moment she turned around. Redheart almost whistled as she saw the ruined state of Cinnamon’s ass, her drooping tail doing almost nothing to hide the thin, sagging black ring that was all that was left of her ponut, or the six or so inches of intestinal tract you could see before the yawning depths were swallowed in darkness. As she stopped at the door to open it, a shaft of late afternoon sunlight and the swaying of her completely limp tail gave Redheart the perfect view of her entire rectum, down to the bend that signaled the start of her colon. Redheart barely waited for the door to close before her hoof shot back to her ass, furiously mashing against the toy she had left in there all day. Shakily getting up, she walked on three hooves to the door, carefully locking it before moaning loudly. After a few more seconds of furious masturbation, she returned to all fours and let out a breath, before walking over to the window and pulling the blinds apart just enough to peek through.

“I sure hope she doesn’t notice the state that she’s in. Everypony needs a show like that in their life.” Redheart muttered to herself, watching as the mare's gently swaying hips caused Twist’s limp tail to swing far enough side to side to show off everything. Unfortunately, a particularly strong swing caused her tail to brush up against the rim of her destroyed tailhole, causing her to freeze for a second before darting off into an alley. “Damn. Oh well. At least I got a show.”

Turning from the window, Redheart walked down the hallway to the last door on the left, not even bothering to knock as she barged in. “Alright, let’s see this paperwork you’ve got for me.”

Glancing up at Redheart, Dr. Stable wordlessly pulled up the side of his long doctor’s coat and revealed his massive throbbing tool, practically drooling at the tip.

“Aww, did destroying that poor mare’s ass get you all excited? Cause I gotta say, that’s the loosest caboose I’ve ever seen walk out of here. What did you do to the poor mare?” Redheart teased, walking up and trailing the tip of her tail down his aching shaft.

“She asked for it!” He protested, reaching out and telekinetically giving her ass a squeeze, causing her to moan and giggle.

“I could see her colon!” She laughed, licking her lips at the memory.

“Oh yeah? Well I’m about to see yours.” Opening the cabinet, Stable pulled out one of the dozens of identical syringes before Redheart shook her head.

“Not today, you’re not. I brought some normal lube cause I’ve been practicing. I want to take your dick naturally, no enhancements.”

“But I though you loved it when I messed up your guts.”

“Don’t get me wrong, I do love it when you wreck my rectum, but I really want your dick up my ass, and I want both of us to be able to enjoy it. Also, I’m tired of sucking you off after you’re done playing. I want you to blow your load where it belongs.” With that, she turned around and presented her ass to him, flipping her tail up to show the purple object lodged in her puffy hole. Slowly, sinfully slowly, she reached back and pulled out the foot and a half rubber horse cock, leaving her ring slightly gaped as the flare came free with a pop.

“Woah… Wait, hold on, so that’s why you wanted a scan of my dick! You wanted one you could take home with you!” Giggling at the doctor's theatrics, she pulled the bottle of generic lube out from under her hat and held it out to him, but she dropped it as he decided to first see just how deep up her tailhole he could wedge his long, thick, slippery tongue. After five minutes, when he had successfully managed to get his tongue far enough in to lick her G-spot, he retracted his tongue from the quivering mess that used to be his assistant. Grinning, he uncorked the bottle of lube, dumping the entire contents into her upturned ass, dribbling the last few drops around the rim for extra lubrication. After using his magic to knead it in, he mounted her and slowly eased the entirety of his dick into her ass, causing her to let out a long, low moan as the flat tip of his dick straightened the bend at the end of her rectum and just barely squeezed into her colon. I have the best job ever, he thought to himself as Redheart’s clit winked out and tapped his balls twice in quick succession. Nothing could be better than this.