Caring for the Young One

III: Doctor's Orders

“SWEETIE BELLE? I’M HOME!” Rarity’s sweet voice floated through the hallway as she stepped into the Boutique. No response. How odd. She quietly locked the door behind her and moved towards the stairs. “Sweetie?” Still nothing. Rarity stopped and checked the clock that sat in the living room. It was barely past lunch-time, so she couldn’t be asleep? What was she doing…

Oh no.

Grabbing the door-key from the table she dashed up the stairs as fast as her legs could move, and practically threw the key into the keyhole. As the lock opened with a satisfying clunk Rarity tore the door open. And she almost passed out from the sight that befell her.

Sweetie was stood on her bed, masturbating furiously. But her hooves weren’t resting on her cock. They were resting on the teddy bear that was skewered on her cock. The small hole torn into the nether region of the bear had been bust wide open. She’d been so aggressive with it, in fact, that the tip of her penis had burst free from the bear's neck, ripping the head off in the process. Stuffing lay strewn across the floor as Rarity spotted the decapitated head lying in a corner. But this was only the beginning.

Sweetie Belle was practically crying as she dragged the bear up and down her length, whilst simultaneously thrusting her hips against it. Her cock and balls had expanded to twice, perhaps even thrice their original size. Rarity was clueless as to how or why this had happened, but she was sure of it. The genitalia was now so big Rarity could practically see every red-raw inch of skin and pulsating vein from the doorway.

As the filly beat herself back and forth great waves of thick, string-like spunk were flung from her cock, splattering messily against the walls and ceiling. An especially large load shot through the air, colliding with a pristine family photo that sat on the windowsill. Rarity, frozen with shock, could only watch as it fell to the floor and shattered. With no signs of the onslaught stopping, Sweetie turned to look at her sister, the bear practically crumbling in her hooves as a result of the filly’s violence.

Through choked back tears, she cried out; “Please Rarity, my body feels weird, I don’t want to go to school tomorrow…” Rarity ran forwards and grabbed her sister. This was the time to go and get some medical advice.

Ponyville Hospital was a cold, uninviting place. The hallways reeked of bleach and cleaning products, and the nurses glided along with a cold authority. Rarity watched the elderly and the sick shuffle around her as she waited by her sister’s side. She had brought a frilly hankie with her to keep her safe from any of the foul diseases in this place, and she held it to her muzzle as the doctor arrived. Extending a hoof to the stallion, she quickly wiped it down with anti-bacterial lotion when he let it go. She refused to catch any of these unfashionable viruses.

“So, you must be Sweetie Belle.” Doctor Horse crouched down by the nervous filly’s side, giving her a warm, inviting smile. “We’ve heard so much about you. Only good things, don’t worry. You aren’t in trouble!” He affectionately tousled her hair as he stood up and invited the two into his office.

Walking through the doorway, Rarity watched as the Doc sat her sister down on an examination bed. Nurse Redheart also appeared in the room behind Rarity, slowly closing the frosted glass door.

“So, Ms. Rarity, the Nurse and I were having a look at your sister’s files, and I’d like to clear a couple of things up for the two of you. You see, futanari foals like you Sweetie Belle, all handle the heat season very differently. In the majority of cases though, the estrous build-up has no effect on the secondary pair of genitalia. But don’t for a moment think I am trying to scare monger. No, not at all. It is entirely common for foals to experience a similar bodily response to the one that you have. The build-up of hormones in the female body can influence the male genitalia dramatically. It may make you feel drowsy or increase your appetite, as well as potentially enhance the libido and size of sexual organs. Your case is rather unique, however, in the fact that both the size of your genitalia and libido have been greatly affected.”

He turned away from Sweetie, addressing her older sister directly. “Ms. Rarity, I am afraid we cannot tell you outright what is the best course of action. Each case is unique, and so we are going to have to complete a series of… ‘observations’ in order to comprehend the best course of action.” He chose his words very carefully; he knew how buzzwords like ‘test’ and ‘experiment’ tended to scare folks. “So would that be okay with you, Ms. Rarity?”

Rarity nodded assertively, and threw a glance towards her sister, commending her to do the same.

“And you, Ms. Sweetie Belle? Would you mind? We’ve just got a lovely tray of fresh toffee apples made up from the canteen. You can have the biggest one as a special treat when we’re all done. What do you say?”

Sweetie Belle also nodded, calmed by her sister’s confidence.

“Very good! In that case Ms. Rarity, I’m going to have to ask you to wait in the waiting room. If you stay here it could influence the results.”
Nurse Redheart held the door open as she ushered the unicorn out of the room. “I’ll just be outside Sweetie dear! I’ll catch you soon!” As the door swung shut she lifted the hankie to her nose once again, before taking a seat and throwing open a glossy gossip magazine, the front page proudly boasting:

INTERVIEW WITH THE ZEBRA FASHIONISTA THAT BLEW A HOLE IN HER CORRUPTED GOVERNMENT!

“Oh, those kooky zebras,” Rarity scoffed to herself.

Now they were alone, Doctor Horse sat at his desk, looking through a towering pile of notes and paperwork. “Okay Ms. Sweetie Belle, the first test we are going to have to do is a sensitivity test. We have to examine any changes in the biological structure of the male genitalia. Nurse Redheart, if you may, please.” The Nurse locked the door before moving towards the bed. She pulled over a stool before sitting in place by the end of the bed where Sweetie Belle was perched. The Nurse – without warning – pushed her hooves underneath the filly’s testicles, resting each in one of her hooves. Sweetie gasped. Her hooves were so cold. Redheart proceeded to lift each testicle slightly before lowering it back down. She watched as Sweetie twitched from side to side, the filly slowly biting her lip. The Doctor excitedly began taking notes of the young mares reactions, before abruptly holding his hoof in the air.

“Thank you Nurse Redheart, I think that’s enough for the moment. Now I need you to check for any cellular mutations in the flesh, and inform me of any changes in the aromatic outputs.” Now was the time for Sweetie Belle to start feeling nervous. She couldn’t speak doctor.
But she didn’t need to speak doctor to understand what the Nurse did next.

Redheart removed her hooves from under her testes, instead wrapping them around her shaft. As she began to stiffly pump the member up and down, she buried her muzzle deep into the folds of Sweetie’s scrotum. Further and further she pushed her head into the layers of skin, until she eventually came to rest. Sweetie’s eyes were wide as she felt an explorative tongue begin to caress every inch of her youthful skin. She couldn’t help but begin giggling as the Nurse’s breath tickled her ballsack as she swallowed back great gulps of her pungent scent. “Well, Nurse Redheart?”

“It’s very interesting, Sir,” her voice floated up, muffled through the flesh she was buried in. “The aroma is incredibly potent, you see. Far more so than that of any other foal her age, perhaps – dare I say – even more powerful than some of the stallions that we have examined in the past.” Her voice was a mixture of concern and intrigue as she continued to blindly caress the towering dick above her head. At least the Doctor assumed that tone was one of intrigue. It was hard to tell with all that meat drowning out her voice.

“Thank you Nurse, the research you are doing is exceedingly useful. You may remove yourself from the patient’s exterior.” With the instruction given Nurse Redheart pulled away, leaving a lingering trail of saliva connecting her tongue to the filly’s privates.

The doctor ticked off one of his notes, before rustling the papers as he searched for the next document he required. His search took a while, leaving Nurse Redheart hovering awkwardly mere inches from the filly’s genitals. It was taking quite a lot of effort from both parties not to jump back into the depraved procedure. Not that they knew of the other’s desperation, of course.

Doctor Horse eventually found the series of documents he needed, bringing them to pride of place at the front of the pile. Clearing his throat, he addressed the Nurse again.

“Alright then, Redheart. We’re about half way. The next examination requires an inspection into the effects of stimulation upon the flesh of the main body. I think you know what is needed of you.”

On his command she lifted her head up to the tip of the pony’s penis, licking her lips hungrily. She continued to play with Sweetie's shaft as she wrapped her lips around the engorged tip. Sweetie Belle was in agony. She’d been sat there, good as anything, letting this mare get on with what she had to do at her own pace. But this wasn’t a normal medical procedure. She was convinced of it. They’d come in, seen the mighty pleasure-tool she had at her disposal, and decided to play a series of tricks in order to get their hooves on it. Well, Sweetie wasn’t having it. If these ‘tests’ were going to go ahead then so be it, but by goodness they were going to be on Sweetie’s terms. Her dirty, depraved terms. As the Nurse experimentally ran her tongue around the outer rim of Sweetie’s flared head, she felt herself being grabbed by the cheeks. Looking up, her eyes met those of the young filly that stared down at her.

“I’m sorry, Ms. Redheart, if you think I’m going to let you use my body any more, you’ve got another thing coming. I want you to remember something. I’M IN CHARGE NOW. You do what I say, when I say it. Unless you want me to run out that door and tell my sister exactly what kind of things you tried to do to me.”

Redheart found her whole body frozen, her mind filled with the strangest desires of subservience. What was it about this situation that mesmerized her so?

Was it that impressive cock that twitched teasingly against her lips?

Was it the way the filly had grabbed her, taking control of the situation like the sexual dominant she was quickly becoming?

Or was it the fact that she had seen that, from the corner of her eye, the Doctor had ceased taking notes and begun to feverishly masturbate, dropping all pretense of these experiments being scientific?

He liked to watch his Nurse fuck her patients, and he knew this incredible filly would blast her into next week. “Do what she says,” he gasped through baited breaths, “I want to see her dominate you.” And so the Nurse looked back to the filly she who’s cock she was speared on, awaiting direction. The balance of power had shifted.

“Okay then, Nursey. If you want to check how stimulated I am, then go right ahead. You know my cum is nicely pent up in that shaft, so I want you to draw it out.” Redheart responded. Dragging her tongue back from the filly’s rim, she began to slobber around the slit of her head. Running her tongue suggestively around it’s edges, she watched as the filly’s head lolled back and her legs wrapped around the nurse’s shoulders. Pushing forwards, she positioned her tongue against the entrance to the filly’s urethra, before forcing the skin apart. It was incredibly tight, obviously having never been penetrated or played with before. The Nurse smiled wryly as she drove her tongue inside with as much effort as she could physically muster. Sweetie screamed with joy as she felt the walls of her cock part around the Nurse’s slick, wet tongue.

Rarity looked up from her magazine. “Honestly darling, it’s just a medical check-up. Don’t be such a baby.” As the screams subsided, she returned to an especially interesting article about Mayor Mare’s plans to build a wall around Ponyville, inspired by Dictator Trixie’s dome idea.

The whole of Sweetie Belle’s body shook as the Nurse crept further and further down into her urethra. Her whole cock felt like it would split in two if this whore wedged herself any deeper inside. Finally to Sweetie’s infinite relief, the shameless mare ran out tongue. She’d managed to force her entire writhing organ into Sweetie Belle's vast futa cock, and the filly could see how happy Redheart was with herself for managing it.

With the filly’s urethra now held wide open, it was impossible for Redheart to stop the rush of spunk that assaulted her mouth and throat. This was her favorite part of the job, watching her patients twitch and writhe as she guzzled back their seed, making them fall in love with her body. Holding the load in her mouth, she pushed it around with her tongue, savoring that sweet taste. Gulping it down in a single motion, she pulled herself free, smiled, and licked her lips. She rose to her hooves, and planted a wet, sloppy kiss on Sweetie’s forehead.
“Good girl Sweetie Belle, we’re all done here! You can trot along to your sister now!”

Sweetie cocked her head as she looked at the Nurse, gazing down at her.

“Excuse me?” Sweetie Belle’s voice was filled with shock at her naivety. “I don’t remember putting you in charge. What, you think you can just drink my pre-cum and waltz away? Ha. This is my game now, and you’re going to do three very simple things for me. First, remember I’m the boss. Second, turn around and show me that cute behind of yours. Third, pull that pussy apart for me.”

Wait, that was just pre? Redheart gulped. Begrudgingly she accepted the turn of events as she felt her entire body being spun around, guided by the filly’s hoof. Finally she came to rest staring at the far wall, with the folds of her vagina being playfully prodded by Sweetie’s awaiting cock. The voice of the Doctor drifted over. His reassuring tones had been replaced by ones of pure aggression and forcefulness.

“By Celestia’s name Redheart, you’d better get on with it or else I’m going to come over and bust a nut inside you myself. And so help me I won’t be gentle. You don’t deserve it.”

Spurred on by the Doctor’s harsh yet erotic words, she lowered her behind down onto the shaft below her, moaning as she felt her soft lips parted by Sweetie Belle’s spear. The Nurse had no time to get used to the hunk of flesh lodged inside her as her entire body was dragged down by the filly’s hooves. She had surprising strength. Either that, or the Nurse’s body had gone weak with lust. Either way, she put up little resistance as Sweetie Belle began to use and abuse her back end. Slamming her down against her crotch before throwing her back up into the air again, Sweetie eventually let go of the mare’s behind. She trusted the breeder-mare knew what to do at this point.

Sweetie began to cruelly mock the Nurse, her clouded brain crushing her normal personality. “Do you enjoy breeding with foals? Does it make you wet, knowing that any moment now you’ll be filled with the children of a pony so many years younger than you? Ha, I don’t even need to ask, of course it does. Just look at the state of your pathetic back end. I can feel your juices streaming down my cock.”

Redheart had never been so content in all her days as a nurse. She’d dominated so many of her patients, and while they’d all loved it, she’d grown tired. Without even realizing it she had longed to be put in her place by somepony, anypony. And now she was. And it felt great.
What made the Nurse feel even better was the fact that she saw Doctor Horse rising from his chair. He’d grabbed one of the rich, dripping toffee apples in one hoof and sauntered over towards his assistant. Her eyes darted from his face down to his immense twitching horsecock that swung from side to side as he walked. Normally hidden from view of patients in its sheath, once it was exposed it was a hell of a sight to see.

Having access to all of the medical creams and drugs in the hospital, Doctor Horse had gone mad with power years ago. Every day, Redheart would catch him rubbing some paste into his shaft or injecting his balls with a syringe full of some strange concoction. All this in an effort to give himself the mightiest cock of any pony in the hospital, to put the stallions Redheart bred with to shame. And while it had worked, it had worked perhaps too well.

His cock was vile. It was the length of his entire body at full mast, daubed with veins so fat they could’ve been mistaken for sausages. The medial ring that marked the middle of his shaft was so wide that Redheart had felt convinced the first time she rode it that it would tear her in half. Fortunately she had tamed it, of course. His nutsack - whilst not overly impressive in size – was freakishly heavy, filling with seed so quickly that no sooner had he orgasmed he needed to do it again. And boy, how impressive that seed was. Redheart didn’t know what combination of drugs had managed it (nor did she want to) but somehow the Doctor’s potency was so intense that he could impregnate almost anyone - or anything - he tried to. She still shuddered at the memories of the time he fathered a litter of pups.

But at this precise moment, she cared about none of those worries. She was about to be double-teamed by the virile Doctor and this incredible filly, and she was gagging for it. She opened her mouth as wide as she could and closed her eyes tight in anticipation as the Doctor placed his fore-hooves up onto the hospital bed.

Oh, yes! Redheart’s mind was awash with lust as she felt the vast, rounded mass of his head being forced into her mouth. It felt so good, and it was so wet with his sticky pre-cum! But wait a minute, this pre-cum tasted really strange...

Peeling her eyes opened, she saw the Doctor’s back leg disappear past her head as her climbed over her. Wedged between her lips was the toffee apple, leaving the Nurse looking akin to a hideous stuffed pig. Doctor Horse moved along the hospital bed before coming to rest in front of Sweetie Belle. Still bucking away furiously at the mare, she looked up at the doctor and licked her lips invitingly. “So, you want a little piece of the action too, big boy?”

Doctor Horse couldn’t help but snicker at the filly’s ridiculous over-confidence. He pushed her down onto her back with a hoof, ignoring his assistant’s pleasurable moans as she was pivoted backwards with the motion. “Listen here, young filly. You might think you’re a big shot just because you’ve broken your way into the easiest mare in the building – other than your sister, of course. But you’re not. This is my hospital, and I am in charge. You aren’t some dominatrix mare. You’re just a filly in her mother’s high heels that needs a good, stiff cock inside her. And so until you bring my day to a satisfying climax, I guess I’m just going to have to shut you up for good.”

With that he rammed his cock forwards into Sweetie Belle’s cute little mouth, parting her lips under the weight and pressure of his freakish member. On the verge of orgasm already, he gave it no time or second thought as he manipulated his way into the filly’s tiny body, until he finally felt her lips come to rest against his medial ring. There was no way in Equestria she’d be able to fit THAT inside her. Not without some major surgery, anyway. But that was just as well, because as the Doctor looked down at the filly’s body he saw her belly distended so incredibly around his own cock he was surprised she hadn’t passed out.

“Very impressive, little one. Most ponies end up overwhelmed way before this point. I would press forwards, but I don’t think that mouth of yours would allow it. So, we’ll just have to make do!” Doctor Horse cried out in excitement as he drew his cock back from the filly’s belly, up and throat and into her mouth. Refusing to quite pull himself free, he lingered there for a few seconds, before ramming it home again as quickly as he could. He listened as both the mares groaned in euphoria before Sweetie was cut short by the doctor’s ballsack smacking her in the chin. The two thrusted as quickly as they possibly could, Sweetie Belle trying desperately to keep up with the power-hungry maniac in her esophagus. Nurse Redheart had lost all signs of civility, now just thrashing wildly up and down on the foal’s crotch, smacking up and down with such ferocity, the entire bed shook.

As the spit-roast raged on, Sweetie was the first to cum. She moaned through the slab of meat inside her as her whole body began to convulse. The hardest orgasm of her life, she could feel herself becoming light headed as she launched load after load into the Nurse’s cavernous pussy, seeping down into her very womb. Redheart could feel her belly gravitating floor-wards with each mighty load dumped inside her, and she’d never felt better. She screamed for more, clamping down on Sweetie’s cock in an effort to milk her of every drop she could muster. As the final wave came to an end, Redheart could feel the semen pushing it’s way up her throat. Having filled every inch of her body, it had nowhere else to go. She felt it butt up against the apple lodged in her mouth, before eventually pushing its way past. The apple bounced down onto the floor as the cascade of seed hurled itself out of her mouth.

Doctor Horse craned his head around to see the carnage that laid in Sweetie’s wake. The sight of his assistant’s pregnant belly, swinging back and forth in the most incredible manner was enough to send him overboard too. He dropped to his knees as he felt his own cock give way to the torrent of semen within, firing red-hot seed into the belly of the mare below him. Once the ordeal was over, he pulled himself free and jumped down onto the floor, wobbling slightly on the landing. He inspected the belly of both the filly he had plundered, and his assistant. To his horror, Redheart’s belly was vastly bigger than Sweetie Belle’s. Her load had dwarfed his. How humiliating for him.

Rarity looked up as she heard the office door creak open. Finally. She’d gotten through about seven of the magazines in the waiting room, she couldn’t of waited much longer. Out tottered a red-faced Doctor and an incredibly happy looking Sweetie Belle, who heartily devoured a toffee apple. A toffee apple stained white. Weird. Doctor Horse mustered up the courage to speak.

“Hey Ms. Rarity, I’ll, uh, make this quick for you. After completing some rather, um, thorough tests… we’ve settled that this is the most extreme case we’ve ever seen. There’s very little in our repertoire that could be of help, so we can only suggest you try something a little controversial.” The Doctor revealed a large, vulgar butt-plug from behind him. Where was he keeping that? “Okay Ms. Rarity, this is a butt-plug. A special, vibrating butt-plug. What you need to do is this: every night before Sweetie Belle goes to bed, insert this into the rectum and switch it on. Come the morning, switch it off and remove it. Rinse and repeat until the lustful feelings subside.” Rarity looked skeptical.

“Are you sure? That sounds like quack science to me…”

“No no no! This is a new scientific breakthrough, just off the grapevine! I implore you to at least trial it. You do want her to get better, right?”

Rarity shrugged her shoulders. She had come for advice, after all. Taking the plug, she thanked the doctor and headed for the door with a smug Sweetie Belle in tow. Once they were out of the building, Doctor Horse began to rub his hooves together, laughing to himself. “That will show that self-satisfied filly not to try to compare herself to me and my incredible cock!” Looking around, Doctor Horse realized several patients were staring at him, confused. Awkwardly he stopped laughing to himself, throwing his hooves down to his side. “Er, next please.”