Twilight Sparkle walked nervously through the front doors of Ponyville's hospital. She was scheduled for a physical today, one she wished she didn't have to go through. If it was any other day, she wouldn't give it another thought, but today was different. She had dressed up to hide an appendage she received after experimenting with a new spell the night before. She took a deep breath to calm her nerves and slowly made her way to the receptionist.

The mare behind the desk recognized her princess and bowed. “Good morning, Princess Twilight Sparkle.” She greeted with a chipper tone in her voice. She stood up and wore a smile to match her mood. “Are you ready for your physical?” Twilight blushed and tried to look away. The receptionist giggled. “It won't hurt, Your Majesty. Please, take a seat while I look for a nurse.”

The receptionist walked away and the purple pony princess walked to an empty seat and sat down. She looked at the end table next to her and saw a magazine about stallion health. She looked around, hoping nopony would see her pick up the magazine. She examined the table of contents and found an article about penile health. She blushed as she flipped through to said article. Twilight was unfamiliar with stallion anatomy and thought she'd read as much as she could before explaining her situation to the nurse who would examine her.

She set the magazine back on the end table. She found the article wasn't as informative as she had hoped it would be. It explained proper hygiene, protection and maintenance, but little else in that regard. She found herself quite uncomfortable when she read about stimulation and endurance. She then realized she needed an information booklet intended for young colts.

She turned her head and saw the receptionist return. Following closely was nurse Redheart. The nurse approached her with a warm smile. “Good morning, Your Majesty. I must apologize, I was sorting paperwork for Doctor Stable.” She raised a hoof and pointed it toward the back. “Are you ready to start your physical?”

Twilight stood up and nervously shook her head, following the nurse through the lobby and down a hallway. “Not really, but the sooner it's taken care of, the sooner I can get out of here.”

Twilight followed Redheart through the hallway. “It's standard practice, Your Majesty. There is nothing to be worried about.”

The two entered an exam room. Redheart closed the door and instructed Twilight to climb on the table and she did. “Before we begin, nurse, I probably should tell you something.”

Redheart put a stethoscope around her neck and walked up to the princess. “What is it, Your Majesty?”

Twilight blushed furiously. “This is really embarrassing for me.”

Redheart giggled as she listened to Twilight's accelerated heartbeat. “No need to be shy. I've been in the field long enough and have seen a lot.”

Twilight nodded. “Still, I would prefer if it was just between us.” The nurse gave an understanding nod and backed away from her. Twilight hesitantly took hold of her dress and pulled it up, revealing a rather impressive penis.

Nurse Redheart's face flushed in confused arousal. She traded glances from the cock in front of her to Twilight's face. “Y-y-y-you ha-ha-”

Twilight lowered the dress, covering up the distraction. “I have a penis, yes.”

Redheart cleared her throat in a vain attempt to calm her wracked nerves. “Do you still have your filly-bits?”

Twilight's ears splayed sideways, her cheeks turned a brighter shade of pink and she nodded sheepishly. “I do.”

Redheart found herself as giddy as a filly on Hearth's Warming Eve. “Your Majesty, if I may suggest, this is a rare opportunity.”

Twilight's embarrassment subsided and was now wondering, “An opportunity for what?”

Redheart grinned. “I have never encountered a pony with both parts in my career. I know there are other ponies like you out there. With your permission, I would like to do some research on this.”

Twilight was now terrified. “Research?! As in-?”

Redheart nodded as she set a tube on a tray beside her. “Sexual research, yes.” Before Twilight could continue protesting, she cantered up to Twilight, lifted the dress and started stroking the flaccid penis. “I've read that some ponies born this way do carry sperm cells. This was obviously magically created, but I wonder if it would hold true in your case.”

The light stroking motions sent pleasurable waves of electricity through Twilight's body and she gasped. “N-nurse! I could give you a sample on my own.”

Redheart giggled as she gave the slowly hardening rod a quick lick. “This is more fun. Besides,” she gently pressed a hoof into Twilight's snatch, giving off a quiet squelch. Twilight responded with a shuddering moan, “you can't tell me you're not enjoying this.”

Twilight bit her lip to stifle a loud moan as she felt the fine hairs on Redheart's hoof slide along her nethers in tandem with her salivating tongue running itself along her shaft. “C-can I... a- at least cast a... s-sound... p-proofing spell?” She said between pants.

Redheart pulled herself away from the young alicorn, continuing to grind her hoof against the princess' pussy. “You saw how dead it was out there this morning, Your Majesty. Go ahead and let it out.” She looked back to the now hard, throbbing member that was cautiously hidden beneath the dress, then gave the princess an inquisitive look. “Would you mind if I asked how you acquired it?”

Twilight bit down on her lip, trying to stave off her imminent orgasm, but her mind was frayed with pleasure and hips began to move on their own. Her heart was racing faster and her breaths became shallower. “C-AH!-Cadance lo-loaned me-HAH!- her personal spell book. Oh nurse, I don't t-think I can last much longer!”

That was Redheart's cue. She continued her ministrations as she wrapped her free hoof around the tube, placed it over Twilight's member and slid it up and down her shaft. She leaned in closer to lick Her Majesty's glistening folds. She gave a quick lick up to her clitoris and that was enough to send the princess over the edge. Twilight screamed in ecstasy as her mare juice sprayed all over Redheart's face and, at the same time, her spunk shot into the tube.

Twilight fell on her back, spent from her climax. It had been a strange morning thus far, but she had to admit, she felt no greater pleasure in the past. “Th-thank you, nurse.”

Redheart removed the tube, being extra careful not to spill its precious contents. “We're not done yet, Princess.” She placed the tube in a free spot on a rack and presented her ass. “I need some help here.” She propped her forelegs on the desk in front of her and wiggled her rump.

The sight of the nurse's damp posterior was enough to arouse Twilight's unwanted package once more. She found herself being pulled toward the nurse's inviting backside. She propped herself up behind the nurse, resting her forelegs on the desk and used her magic to steady her shaft as she tentatively prodded the entrance. Redheart let out a blissful squeal as Twilight penetrated her slick love tunnel. Twilight dropped her head on Redheart's withers and panted as she thrusted into her.

A doctor opened up the door. His eyes shrank to the size of pin pricks and his jaw almost dropped to the floor when he saw his princess rut his nurse. “What the hay is going on here?!” He demanded.

Twilight yelped and pulled herself out of Redheart. “D-doctor!”

Redheart panted and gave the doctor a seductive grin. “Doctor Stable, our patient is in need of release.”

Doctor Stable closed the door and looked to Twilight, she looked nervous and scared. She covered up her softening erection with her forelegs and her face was flush in embarrassment. He looked to Redheart, her front half was still spread on the table, her nethers were dripping with anticipation. The doctor facehooved and groaned before glaring at the nurse. “Fine, but consider this your bonus for the year, Redheart.” His gaze returned to Twilight and waved an encouraging hoof to Redheart. “Please, Your Majesty. Continue where you left off.” He said as he took off his stethoscope and smock and placed them on a nearby table.

Twilight's brain seemed to have shut down momentarily as she was overwhelmed that she was just having sex with the nurse... in the hospital. She came back to reality when she felt an electric tingle move along her shaft. The princess let out a startled yelp. “W-what are you doing, doctor?!”

The doctor gave her a small smile. “What do you think I'm doing?”

Twilight panted. “Y-you're using your m-magic to st-stimulate my ph-phallus.”

After a minute of continuous stimulation, Twilight's member was rock hard again and the doctor cut his magic. Twilight glanced to Redheart who was wiggling her rump, then she focused on Stable, who gave her a reassuring nod. She moved behind the nurse, propped herself up and used her magic to guide herself back into the nurse's winking sex.

The nurse threw her head back and gasped in pleasure. “Th-thank you, Your Majesty!”

Twilight felt a sudden pressure against her own folds and let out a quiet squeak. She turned her head toward the doctor who started prodding her. “Warn a mare before you goose her.” She calmly advised.

Stable smiled and nodded. “Forgive me.” He said with an apologetic tone as he rubbed his cock against Twilight's snatch. “Would this be your first time being vaginally penetrated?” Twilight chewed her lip and weakly nodded. “You're going to experience a moment of pain. What I want you to do is focus on the pleasure you're currently receiving.”

Breathing heavily, Twilight nodded in affirmation as she continued thrusting herself into Redheart whose breathing was labored from the rutting her princess was giving her. “Harder, Twilight!” She moaned. “Rut me as hard as you can!”

Without warning, Twilight felt the doctor penetrate her marehood and she stopped. He tentatively slid his rod in her until she felt something stop his advance. Her eyes widened and she turned her head. He gave her a slow nod, not going any further until he had her permission. She responded with a nod of her own in confirmation. He slid himself back a bit and thrusted forward. Twilight felt something tear inside her, her eyes widened; irises shrank and she let out a pained scream.

Redheart wiggled herself, reminding Twilight there was still work to do. The brief pleasure from the nurse's action distracted her from the pain in her other end. She resumed thrusting into the nurse. The stimulation she received was twofold: her cock slid against the nurse's slick walls, gripping it; the doctor's cock slid out slightly, the pressure and release within her was almost intoxicating. She pulled back and the doctor slid deeper inside of her. The pain was completely forgotten at this point and the pleasure really had become intoxicating. She wanted more.

The doctor thrusted as Twilight pulled back and pulled back as she thrusted. The sounds of sex echoed in Twilight's head: the doctor's panting; the nurse's moaning and occasional gasp; the slick wet schlicks of penetrated vaginas. Twilight found her mind in a lust-driven haze and increased the vigor of her thrusts, wanting to go inside the nurse as much as possible while wanting the doctor inside of her as deep as possible. She felt his testicles slap her for extra stimulation. Everypony's breathing started to become shallower.

Stable let out gasping pants as he was nearing his limit. “Y-Your Majesty. I'm going to cum soon.”

Redheart nodded and whimpered in pleasure. “Me too.”

Their words tipped her over the edge. Twilight threw her head back and let out one last lust-filled scream. Her folds clamped down on the doctor and Redheart's clamped on her. She felt extra fluids squirt out of and into her from the back as well as the front.

Stable pulled himself out of Twilight. The mix of their ejaculate poured of her folds. He noticed that Twilight was having difficulty standing as she pulled herself out of Redheart, so he levitated her onto the table onto her back. He looked to Redheart and gave her a soft smile. “Clean this up and you can have the rest of the day off.”

The nurse, still splayed on the desk, gave him a weak smile and a satisfied moan. “Yes, doctor.”

Twilight relaxed on the bed, recovering from what would be the best sex she would ever have in her life and the first coherent thought that manifested in her mind was that she had to thank her sister in-law for the tome.

Author's Notes:

Well... that was my one shot clopfic. Let me know what you think.

The first issue of this story inspired what you just read.