Author's Note

I wan’t to give a huge huge thank you to Syren345 who has aided me in pre-reading and editing my story and generally just making it so much better to read.

Chapter1: A Small Case of the Feather Flu. (Syren345 Edit)

The morning sun rose above Ponyville one warm summer morning, signalling the start of a brand new day.

Sweetie Belle woke up like clockwork; she stretched her arms, getting all of the little kinks out, and then moved her satin bed covers down, exposing her long toned white legs and her currently flaccid, 15-inch mare cock that was 2.5 inches in diameter, resting atop two cantaloupe-sized testicles.

A quick shower later, Sweetie got dressed and went downstairs for some breakfast; Rarity was sitting at the kitchen table with a mug of coffee and scribbling on one of her crossword books.

“Morning, Rarity.”

The mare in question looked up from her puzzle book and promptly gave Sweetie a quick hug. “Good Morning, sister. You look as beautiful as ever.”

Sweetie blushed from the compliment. “You always say that Rarity...” Sweetie said with a huff of embarrassment.

Rarity poked Sweetie on the nose. “...and, I’m always right.” Rarity proclaimed with a big smile etched on her lips.

A sudden burst of rapid but fairly gentle knocks filled the quiet downstairs area. Both Belles’ walked to the front door passing through the shop floor. They could see Fluttershy standing on the other side, Rarity opened the door, and Fluttershy stepped inside.

“Why hello dear, how can I help you?” Rarity asked Fluttershy, who looked like she’d been rushed off her feet.

“Oh Rarity, I need a big favour...Rainbow Dash has a small case of the feather flu and needs somepony to watch over her...I can’t do it because it’s only contagious to us pegasi, and everypony else has something else happening that’s keeping them busy, so you're my last hope. I only need you to spend a couple of days with her. A week tops.”

“I’m sorry, Fluttershy dear, but I need to be in Canterlot this afternoon. Surely there must be somepony else?” Rarity asked, biting her lip nervously.

Sweetie’s heart did a flip when she heard that the love of her life needed somepony to take care of her. This was too good to be true!

“Oh...ok. Thanks for letting me know. I’ll try to find somepony else...” Fluttershy answered sadly, getting prepared to leave.

Suddenly, Sweetie piped up before the mare could leave. “Wait, I’ll do it!”

This made Rarity ponder the offer for a few seconds, weighing the possibilities.

“Very well, Fluttershy, Sweetie will be looking after Rainbow Dash,” Rarity said to the custard-coloured mare with a little nod.

Fluttershy smiled and looked at the two mares gratefully. “Oh, thank you so much...but are you sure?”

“Of course I am. It’s probably not a secret at this point that I have a huge crush on Rainbow Dash, so the more chances I can get to spend time with her, the happier I’ll be!” Sweetie said with an excited smile gracing her lips.

Unbeknownst to the two older mares, Sweetie’s cock was twitching from the sheer thought of being near the athletic mare. Those 15 inches of meat were held in place against Sweetie’s left leg by her trousers, the fabric bulging at the seams and making it look as if the trouser leg would rip and set free the beast. It was impossible not to notice, but it had become so commonplace that the residents of Ponyville had become mostly desensitized to it and never even gave it a second thought these days.

It was much easier to get to Rainbow’s home now that she wasn't living in the clouds anymore. The novelty of a floating home had gone sour over time, and Rainbow had sold her cloud home some years ago.

A short walk through Ponyville, past the Townhall and two doors down from Amethyst’s home, and here she was. Outside a nondescript house with a 20 in gold nailed to the door.

*Knock, Knock* There was no response for a few long moments before finally a voice that could only belong to Rainbow Dash responded.

“Who is it?” The voice asked from beyond the other side of the door.

“It’s Sweetie Belle!” Sweetie called out to Rainbow, knowing that her own voice was unmistakable.

There was a slight pause in sound from the other side of the door before the opening of locks could be heard. The door opened to reveal Rainbow Dash in her dressing gown.

“Hey, kid, what's up…?” Rainbow asked Sweetie Belle, her voice sounding a little hoarse like she’d definitely been sick lately.

Rainbow Dash’s heart didn’t know whether to sink or soar. Her mind was torn apart by two conflicting thoughts; the first was that she might be able to build up enough courage to actually ask her out instead of making up excuses every time Sweetie invited her out somewhere. The second thought was Rainbow knew Sweetie fancied her, and Sweetie knew that Rainbow was surprisingly submissive and enjoyed the feeling of being dominated. That was just one of many regretful secrets leaked after a night of knocking back cider shots at a dime a dozen.

“Fluttershy wanted somepony to look after you while you got better. So, here I am.” Sweetie said with a smile etched onto her face, her eyes inspecting Rainbow top to bottom. The poor mare’s face looked like a dishevelled mess, an unfortunate side effect of being sick with the flu.

Rainbow pretended to mull it over for a second or two before she promptly nodded. She wasn’t about to close the door on a chance at a first relationship or at the very least losing her V-card, hopefully, both.

“Thanks for coming over. I’m guessing the others were all busy,” Rainbow said to Sweetie.

“Yeah, I volunteered. I thought this would be a good time to hang out with my favourite mare,” Sweetie said with a smile as she swooped in and pecked Rainbow on the lips. Rainbow instinctively reciprocated and kissed the unicorn back, the kiss lasting for about 10 seconds. But that was enough for her cheeks to take on quite a rosy hue.

Sweetie Belle gave a little giggle at Rainbow’s flustered expression and skipped into the kitchen.

Rainbow’s eyes followed the unicorn, her tail swishing and swaying this way and that. It was only when she was out of sight that Rainbow realised what she had been doing and gave herself some light slaps on the face as punishment.

Rainbow walked in behind Sweetie Belle, who had already gotten the kettle onto the stove.

Sweetie’s melodic voice sang throughout the kitchen as she went about cleaning the pile of dirty dishes that had been used the night prior.

“Have you had anything to eat yet, Dash?” Sweetie asked the pegasus, not looking behind her as she went to work on the dirty dishes.

A couple of coughs later, Rainbow was finally able to rasp out an answer.

“No, I was just going to do that when you showed up,” Rainbow said, her voice sounding a little embarrassed.

Sweetie Belle looked through the cupboards and fridge and found...nothing...

“Rainbow Dash, When was the last time you went shopping?” Sweetie asked the mare, not believing that the kitchen was so completely devoid of any food.

“Um, about a week ago, I think, why?”

“Well, you're all out of food,” Sweetie said with a sigh, turning to the mare.

Rainbow Dash didn't like the sound of that.

“I could always get a few bits now,” Rainbow said, but Sweetie shot that notion right down.

“Nope, there is no way in Tartarus I’m letting you go outside with the feather flu. It’s not safe when you’re so sick.” Sweetie said with a dismissive wave of her hand.

Rainbow, meanwhile, placed her hands on a very grouchy tummy.

“Damn it. I’m starving…” Rainbow said with a groan of pain as she rubbed her aching tummy with her hands, trying to alleviate the discomfort she felt.

Sweetie’s horn suddenly buzzed to life, and two flat boxes popped into existence. Sometimes, Sweetie loved being a unicorn. She could do useful things like this easily.

“Good, because I stopped for takeaway on the walk over here, and I ordered us two pizzas. They should be good.” Sweetie said with a big smile on her face as she laid the pizza boxes onto the dinner table.

With a joyous adulation, Rainbow did the only thing she could think of at that moment.

Cupping the shorter girl’s face, Rainbow thrust her face forwards and kissed Sweetie Belle for what felt like double the time of the first kiss, unsure if she should continue or not. Eventually, after what felt like an eternity, Rainbow reluctantly let her go.

After she had been released, Sweetie Belle could only grin at Rainbow.

“Do you always kiss ponies that bring you food?” Sweetie asked the mare with a smirk forming on her lips, her voice holding a teasing tone to it.

Rainbow shyly rubbed the back of her head due to the teasing, embarrassed at this turn of events.

“...No, that was my first real kiss.”

Not wanting to make Rainbow any more uncomfortable than she already was, Sweetie quickly decided to change topics.

“Well, anyway, you need to get some rest, so let's go up to your bedroom. We can eat up there.” With that, Sweetie’s horn glowed, and her magical aura completely encased the boxes and levitated them above her head.

Sweetie walked side by side with Rainbow, who didn’t say anything when Sweetie wormed her arm inside her dressing gown and proceeded to grope and play with her ass. Sweetie’s fingers explored every nook and cranny of Dash’s bottom without actually entering her hole, which only served to tease Rainbow more than what was already happening. While the two of them walked this way, Rainbow couldn’t help but reminisce a little.

When the flirting and groping first started, it was playful and nothing too serious. Over the course of about a month, she’d gotten even more adventurous and daring, and I didn't mind. I’d even played along. A kiss here, a bottom grope there, the occasional overly touchy-feely hug, sharing some naughty jokes and even a very adult game of truth or dare in which she revealed how much she really liked me.

Sweetie placed the pizzas on the bedside nightstand, and she hung the dressing gown up on the doorframe. After that, she quickly helped the un-well pegasus into her large, plush bed.

“Thanks, Sweetie, you’ve...been a big help,” Rainbow said with a smile to the unicorn, laying down on her favourite side of the bed, the one closest to the window.

Rainbow chuckled nervously as she chewed on her slice of pizza, she made one wayward glance in Sweetie’s direction, and her eyes immediately fell upon Sweetie Belle’s bust. Her breasts were absolutely huge, each one plump and round, being constrained only by her shirt. Their sheer size completely transfixed her eyes.

Sweetie could see where Rainbow Dash was staring, and she smiled a not so innocent smile. Dash would probably let Sweetie get away with murder if she batted her eyelashes enough times, and she definitely wouldn’t tell Rarity of any bad behaviour, so Sweetie decided to have some fun with this recent development.

“If you wanted to see them, all you had to do was ask, Rainbow...” Sweetie said in a slightly seductive voice, looking right in Rainbow’s direction.

This made Rainbow come right back to reality, and once again, she realised that she had been staring, without even meaning to!

What was it about Sweetie that made her just stare like that?

“I...um didn’t know that was an option,” Rainbow said nervously, her face an intense shade of red at this point due to embarrassment.

Smiling, Sweetie slowly walked over to Dash and began the arduous process of popping each button of her shirt. She went until she got to the last button, which popped right open, and her braless breasts surged forward. Sweetie removed her shirt and approached the bed, climbing onto it and not wasting even a millisecond of precious time, immediately straddling Dash’s hips.

“Well, you do now, so what do you think. Aren’t they perfect?” Sweetie asked the pegasus as she batted her eyelashes at her, giving Rainbow a rather confident smile.

The older mare couldn’t have looked away from Sweetie’s bosom if she had wanted to. The two large orbs swayed back and forth like a lewd pendulum, and with a dumb expression on her face, she nodded.

Sweetie’s confident smile turned into a confident smirk as she saw how transfixed Rainbow was on her ample bust. “You can touch them if you like Dash.” Sweetie’s voice was as sweet as honey, inviting Rainbow to touch the two objects she lusted after more than anything else.

Rainbow was practically hypnotised at this point! She wanted nothing more than to take up the offer she was just given, and so she quickly raised her hands to Sweetie Belle’s body, and she promptly began to feel and grope the flesh in front of her. Dash’s light blue fingers sunk deep into the ample tit-flesh, her fingers nearly disappearing altogether at one point. These were truly the best pair of breasts in all of Equestria! These puppies would probably make any mare jealous.

Sweetie hummed contentedly at the ministrations enacted upon her chest, her eyes fluttering halfway closed. She didn’t get to experience sex very often, and the fact that her biggest crush was feeling her up made it feel even better than it would otherwise.

“You seem to be really enjoying yourself there, Rainbow. Why don’t you give them a taste?” Sweetie beckoned the mare with a lustful smile. One of Sweetie’s hands found its way to Rainbow’s hair and began to stroke her multicoloured locks.

Rainbow looked up at Sweetie as her hand was still idly groping the cushiony breasts, trying to hold back the moans she so desperately wanted to let out.

“I would love to. But it wouldn’t be a very fair trade...m-m-my breasts are way, way smaller than yours.” Rainbow admitted sadly, her face turning a bright red colour as the shame and embarrassment hit her like a freight train.

Sweetie placed her hands on Rainbow’s shoulders to focus her attention.

“I like your boob’s just fine the way they are. Let me show you,” Sweetie said with a smile as she leant her head down to Rainbow’s bosom, her mouth landing right onto her intended target.

Rainbow jumped at the sudden movement, only to then start speaking in Gasps. Sweetie was haphazardly licking and sucking on Dash’s smaller but just as perky tits, showing them the love Sweetie felt that they deserved. After a minute or so of ravaging the blue mare's chest. Sweetie sat back up on her knees and leaned above Rainbow, her boobs mimicking hot air balloons at the moment.

“Okay, Dashy, I’ve tasted yours, so now you taste mine. Deal?” Sweetie asked with a big smile forming on her face, gazing right into Rainbow’s violet coloured eyes.

Rainbow looked up at Sweetie, a firmly red blush currently staining her normally blue cheeks. She gave the unicorn a curt nod of agreement. “...Deal...”

Rainbow Dash, now allowing herself to be led by her currently raging hormones, started to suckle on both of Sweetie’s nipples, her mouth frantically going back and forth between each one hungrily, trying to get as much of Sweetie’s breast flesh into her maw as she possibly could get. Rainbow was ravenous!

“It definitely looks as if somepony has gotten better...” Sweetie complimented the pegasus mare with a chuckle, a deep, throaty chuckle that perfectly highlighted how much she enjoyed Rainbow’s breast worship.

Rainbow looked up at Sweetie as she released the unicorn’s nipple from her mouth, her lips letting the nipple go with a loud, greedy “POP”.

“Thanks, that was pretty awesome,” Rainbow said in her usual, cocky manner, giving Sweetie Belle a smirk.

Sweetie Belle, in return, put on her best ‘I am offended’ face.

“Well, I thought they would be a little better than ‘Pretty awesome’,” Sweetie said with a disappointed huff.

“Sorry, I didn’t mean for it to come out that way, I’m not much of a wordsmith, but that was amazing!” Rainbow said with a big smile on her face, looking up into Sweetie’s eyes.

Sweetie Belle silently got off the bed and stood in front of Dashy, who was currently resting against the headboard. She grabbed Rainbow by the arm and roughly yanked her out from the warm bed sheets and down onto the floor.

Sweetie Belle shrugged off her shirt, allowing her awe-inspiring boobs to have complete freedom, free of the fabric prison that used to be her shirt.

“Hey, Sweetie, what the hell was that for!” Rainbow shouted at the unicorn. Rainbow had landed pretty hard on the floor, and it had knocked the air out of her lungs as a result.

“You’ve been lying about being ill, Rainbow,” Sweetie said suddenly, her voice calm and a little bit steely as she made this accusation.

Rainbow’s eyes opened wide from shock for a few seconds before she scoffed. “What? No, that’s ridiculous! I wouldn’t lie about something like that! Feather flu is no joke. Pegasus ponies have died because of it!”

“Before I stopped for the pizza on my way over here, I made a side trip over to Twilight’s castle and asked for a book on pegasi illnesses. Would you like to know what I found?” Sweetie asked, her lips starting to curl upwards into a devious smile. She knew she had Rainbow now.

Rainbow, for her part, just sat quietly, staring at the floor. Apparently, a floorboard had suddenly become very, very interesting.

“Well, I found out that the feather flu only affects foals. And you certainly don’t look like a foal to me, as much as you might act like one sometimes.” Sweetie said with a bit of a giggle, her statement making Rainbow go red in the face for a few seconds.

“I’m sorry, Sweetie Belle. I just wanted to see you...that was all. I shouldn’t have lied to you and Fluttershy.” Rainbow said sadly, her head looking back down at the floor as her face was now sombre, filled with guilt.

Though she would accept the apology later, Sweetie decided to continue the act a little longer, more for her benefit and fun than anything else. “Do you know what happens to bad girls when they lie, Rainbow?”

The rainbow maned pegasus shook her head, finding it difficult to look Sweetie in the eyes at the moment.

“They get punished, Rainbow. And I have just the thing to punish naughty girls!” Sweetie said, her lips curling upwards once again, but this time into a more demented smirk than just a regular smile.

Rainbow crossed her arms and slowly looked up at her wanna-be marefriend.

“I’ll take any punishment you want...just please don’t hate me, Sweetie, I promise I won’t do it again,” Rainbow said to the mare as small teardrops dripped to the wooden floor.

Sweetie found that she couldn’t stand to see Rainbow cry, and so she quickly knelt, cupping Dash’s chin in her hands and leaning her face in, licking away the tears.

“Hey. No tears, this is a punishment that we can both enjoy, Rainbow.” Sweetie said with a smile to her wanna-be marefriend, looking the mare directly into the eyes.

Rainbow furrowed her brow, not fully understanding what Sweetie meant at the present moment.

“What do you mean when you say ‘Both Enjoy’?” Rainbow asked the mare, tilting her head a little bit out of curiosity.

Sweetie gave Rainbow another devious smirk, feeling blood rush between her legs due to excitement. "I'm glad you asked, Rainbow. I've been backed up since this morning, so this will be great for me.”

Rainbow looked confused for a couple of seconds and didn't fully understand the consequences of her question until she saw Sweetie Belle unbuttoning her trousers, sliding them down over her long toned legs.

The trousers dropped to the floor, and Rainbow's heart sunk when she finally understood the full gravity of what Sweetie Belle meant.

Rainbow looked on in equal parts shock, horror, and unabated lust as the 15-inch flaccid member rose to the heavens, reaching its full 30 inches in length and its full 5-inch girth as it cast a shadow on the prismatic mare. Rainbow, now realizing what she had gotten herself into, backed away slowly.

“Um, Sweetie, what are you doing?” Rainbow asked, kicking her feet back as she tried to escape from Sweetie.

Sweetie Belle took a few steps closer, her snow-white hand moving up and down her shaft, rhythmically pumping it up and down, the shiny pillar of flesh contrasted vividly with her pure white coat. Her member was white but mottled with splotches of black, a colour combination that would look very appealing to virtually any mare.

Her cock was quite the specimen. It would put many stallions, most likely even Big Mac, to shame. It had, for a long time now, been her pride and joy. It had a thick medial ring at its midpoint, and the flared, flat tip looked quite menacing, all with a constantly throbbing vein bulging up and down the entire length as a constant reminder of how much blood was being pumped to maintain her erection. Blood wasn’t the only liquid that vein would pump, however. But that would come later.

“Well, I’m preparing your punishment...hot and thick...the perfect way to deal with bad little girls who tell such fibs. What could be more suitable than that? Not to mention, all of our playing around earlier got me all wound up as fuck.” Sweetie said with a chuckle, her cock beginning to reach its full size.

Rainbow caught a glimpse of the bulbous, swelling spunk factories hanging underneath Sweetie’s body, and immediately she let out a shudder. They were MASSIVE! As massive as Sweetie’s shaft appeared to be. Rainbow could practically hear them as they churned and produced seed.

Rainbow suddenly gulped nervously, her body beginning to shake due to the sight in front of her. “Y-you know what, kid? I’m uh... really sorry about the whole lying thing, so no need to overexert yourself for my sake!” Rainbow said with another gulp, hoping this would deter Sweetie from doing what no doubt coming next was.

Sweetie gave Rainbow a cocky smirk and shook her head suddenly. “Oh no, not so fast! You still need to redeem yourself for making Fluttershy worry. I can’t let you go to bed unpunished, now can I? Fluttershy put her faith in me to take care of you, and that also means teaching you right from wrong. Plus, just think of it as a favour. You’ll get to act out all of your submissive fantasies, and I get to dump this huge load that’s been building up inside these balls all morning, directly into your gut...win-win, as far as I’m concerned!”

Rainbow continued to crawl backwards. She didn’t want to miss this opportunity to get dominated by the most beautiful and well-hung pony in all of Equestria, but she was nervous about taking that...thing between Sweetie’s legs. Soon, she found that she could go no further, as the bed was blocking any means of escape from behind her.

Sweetie saw the opportunity to make her move, and she promptly took it. Gripping her shaft with one hand, she brought her cock down towards Dash’s face, where she laid the ginormous shaft over one eye and stared directly into the Pegasus’s soul through the only other visible window, the eye that wasn’t covered in her girthy cock.

Dash mentally noted the weight of the member covering half her face. It was absolutely immense! She stared back up at Sweetie with a wide eye that was slowly becoming hazy. With every breath she took, Rainbow got a full inhale of the masculine-feminine concoction emanating off the young unicorns fuck stick. It was a combination of mare and stallion pheromones, a lusty cocktail that seemed to be wafting directly up to her brain via her nostrils.

“I-I can’t believe it, I’ve been a virgin for all 27 years of my life, and my first time is going to be with an 18-year-old girl who has a cock that’s nearly as big as me...” Rainbow said as she sucked in a deep breath, letting out a little cough as Sweetie’s strong, dominant scent entered her nose once again.

Rainbow, for her part, was as good and natural at playing the victim in the bedroom as she was playing the hero in front of a crowd in awe and stunned onlookers. Acting had always been a natural skill of hers, even if she didn’t use it well all the time.

Sweetie took a small step backwards and lined her cock up with Dash’s mouth. Gently, she nudged it forwards, her urethra now resting against the woman's nose, releasing a cloud of intoxicating fumes the prismatic mare was now breathing in, clouding the mind, resistance slipping away, morals dispersing via the ebb and flow of the moment, any previously built up walls Rainbow had been quickly crumbling into nothing but dust. What was once fright was now fervour. Disgust was now attraction. Rainbow wanted this, and any prior inhibitions she had were quickly being washed away by the surging tsunami of lust that was Sweetie Belle.

Rainbow Dash no longer had the strength to fight the inevitable; the cocktail of pheromones Sweetie had been releasing had ignited the sexual part of her brain. That part of her brain brought out her natural desire, the desire to be bred, the desire to be filled, and the desire for sex. She recognised her new place in this world; it served her new, young mistress’s needs.

Rainbow’s mouth slowly opened, causing Sweetie to grin lustfully. She quickly pushed her hips forward, steadily inserting her cock into Dash’s mouth, the damp confines of which were very pleasing to her throbbing stallionhood but not nearly enough to satisfy the teen’s large appetite. Reaching down, Sweetie grabbed a fistful of Dash’s mane in her hand and yanked her up to the bitch-breaking endowment as it was simultaneously pushed down. This effect caused the massive fuckpole to slide right into Rainbow’s waiting maw.

In her semi-coherent state, Rainbow could still taste the colossal prick as it glided over her taste buds, the massive thing nudging itself closer and closer towards the entrance of her throat.

Sweetie’s forced blowjob came under scrutiny when she hit Rainbow’s pharynx, her cock seemingly not wanting to slide forwards anymore. Not to be deterred in her quest, she promptly swung her hips back, and thrust them forward mightily, with all her strength, her cock passing through this blockage right into the blue mare's throat with ease. Rainbow’s involuntary gagging could be heard. The blue mare suddenly gripped onto the unicorn’s hips to steady herself as inch after inch of thick girl meat was shoved down her aching, stretched throat.

Sweetie Belle rolled her head on her shoulders, the pleasure overwhelming her senses. “Nice work, Rainbow Dash, that was 5 inches; let’s try for another 10...Dear Celestia, you’re right. Good thing I’m here to help loosen you up.”

Getting tired of manually holding Dash in place, Sweetie decided to manifest her magic into her two hands, which held onto the side of Rainbow’s head so she wouldn’t slide off her mare-breaker.

“Fuck...this is good.” Sweetie complimented her partner as she felt her length get massaged by her slutty throat. This was amazing! She felt just as good as when she got her cutie mark.

Sweetie Belle continued moving forwards, her mammoth cock going deeper and deeper every time she surged her hips onward. Thick droplets of cum dripped from the head of her cock, coating the walls of Dash’s throat with her own personal homemade lube so the glistening white and mottled black shaft could more easily pump in and out of her quarry’s gullet.

Not to mention how hard her large, pendulous sperm factories were smacking into Rainbow’s chin every thrust, making a lewdly wet smack resonate throughout the room every time Sweetie thrust forward.

“Nearly there Rainbow...that was 15 inches. Just have to double that, and I’ll stop holding back. Mmm, I think it’s time to change it up a little.” Sweetie said with a devious smirk forming on her lips, looking down at her lover.

Sweetie took a few moments to take in the sight of Rainbow, whose throat was bulging out obscenely around her massive length. If she wanted to, Sweetie could lower her hand down and jerk herself off using Rainbow’s throat, but that would be a bit too much for either mare to handle, currently.

Sweetie, with her magic, lifted Dash onto the bed so that she was lying on her back, and her head was hanging over the edge of the mattress. Her magically infused hands disappeared, and so did the last 15 inches of mare meat.

Rainbow, in her clouded vision, was only able to see the two large sperm tanks as they roughly thumped her in the forehead every time Sweetie's face slammed her cock home. Sweetie, at this point, was going for broke. Any prior inhibitions she had in her quest to fuck the mare’s throat were long gone. Now, it was as if Sweetie were trying to mate with Rainbow’s gullet, her tip nearly reaching into the girl’s stomach as she ploughed her turgid member home.

“Celestia, I’m close! Alright, Rainbow, it’s time for the final act of your punishment!” Sweetie said as she suddenly grits her teeth, the pleasure reaching levels the likes of which Sweetie had never felt in her life. Her hand never felt this good! Nor did her magic when she used it to play with herself. No, nothing could ever compete with the feeling of mating with a needy mare. And that was exactly what Rainbow was at the moment. A needy mare who needed Sweetie’s cock just as bad as Sweetie needed her throat.

Sweetie’s rhythmic thrusting soon became erratic due to the pleasure, and her hips were beginning to blur with this newfound speed. All those long hours at the gym were finally paying off for the unicorn.

Sweetie’s muscles tightened, and she felt the dam in her loins was about to burst, about to break. Her load was about to surge, and there was nothing she nor anypony else could do about it.

“Here...IT...COMES!” Sweetie suddenly shouted, the unicorn brutally ramming her hips forwards into Rainbow’s maw, sheathing every single inch of mare cock into Rainbow’s throat, her cock wearing Rainbow like a cock sleeve.

Sweetie’s goliath cock pulsed within Dash, filling and bloating the pegasus’s stomach with wave after wave of thick, potent cum, her belly now whitewashed with her mistress’s seed of punishment. Rainbow’s gut expanded from the slim and toned athletic build she had previously sported and prided herself on to a new look that made her seem like she was 9 months pregnant, with twins to boot!

Sweetie, finally feeling her orgasm die down after what felt like minutes of uninterrupted cumming, sighed in pleasure and slowly pulled her member out of Rainbow’s throat. The entire time, the mare’s throat clung to her shaft as if Rainbow didn’t want to let it go. Sweetie’s cock was being milked even as she tried to get it out of Rainbow’s gullet. “That was awesome, Rainbow. Now, I think it’s time for bed. What about you?” Sweetie asked rhetorically as she smiled down at her mare.

Sweetie Belle backed up and looked down at her partner, only to find that her newfound cock holster was sound asleep.

Sweetie, not one to be cruel, laid Rainbow’s head down onto the lush pillows on the bed and grabbed the blanket, laying the cyan mare into the covers so she would be warm and comfortable while she slept.

Tucking the Pegasus into bed, Sweetie got into the bed as well, and she slept beside Rainbow, her inky white and black flesh pillar rubbing against the older pony as she dreamed. The teenager snuggled up to her cum bloated crush, and while she basked in the warm, pleasurable afterglow of sex, she drifted off to sleep herself.

“Good night, Rainbow Dash, get all the beauty sleep that you can. I’ve got some big plans for tomorrow.” Sweetie said in a tired yet happy tone of voice. The last thing she saw before she passed out was her lover’s lips curling into a smile as she slept.