Rarity's Cumflation Lust

 

“I've hit a small problem with a personal magic experiment that I simply can't talk to my friends about. Please come over as soon as you possibly can. R”

 

You maybe waved at Rarity once or twice a month. You didn't know her personally. She was a seamstress and you were a random unicorn doing your best to apply for Celestia's School for Gifted Unicorns. Yet she had somehow gotten hold of your number and had boldly asked you for help. Not wanting to keep a mare waiting any longer, you approached the door of the boutique and gave it a knock.

 

“Come iiiiiin!” A feminine voice called from behind the door. A bright flash of blue magic turned the door handle and opened it for you. “Make yourself comfortable.” The voice called out again from somewhere inside.

 

The lights were off. It was a bit frightening standing in the empty shop with so many mannequins casting eerie shadows in the moonlight. A small flicker caught your attention in the back, drawing you towards it. You peeked into the dimly lit room and let out a little sigh as you found Rarity sitting back on her chaise lounge.

 

“There you are. Please, come have a seat.” Rarity pat the spot next to her on the lounge. She grabbed a bottle of wine and poured two glasses. “Here. A small gift for calling you out so late with such short notice.” You tensed up as she leaned forward into the light. Rarity was wearing nothing besides a translucent silk nightgown. Her rosy pink nipples almost bled through the cloth and you couldn't see any panties clinging to her hips at all.

 

“Th-Thanks.” You sat down and grabbed the wine glass. The deep red wine went down smooth with a rich aftertaste. Anything to calm the nerves right now. “So...um...What do you need help with? Aren't you friends with Twilight Sparkle? I'm sure she could help you out fairly easy with whatever problem you have.”

 

“Oh darling, didn't I mention?” Rarity leaned over and placed a hand on your thigh. “My troubles are a little more complex that just needing some advice or a counter spell...”

 

Poker face. Look at her eyes and her smile, not anywhere else. You tried your best to stay stoic and calm but her soft hand seemed to squeeze you just right. “Ahhh.....So..So...So what do you need MY help for, if you don't mind me asking?”

 

Rarity let out a little titter. “I know this is quite rude of me but I have to ask a question to answer your question. What do you think of me?”

 

“Oh...Um...You're nice? A very generous mare that uses all her talents to help those around her, even if it meant giving the shirt off her back...” You replied.

 

“Darling....” Rarity began to speak in a sultry tone. “...I don't mean like that.” Her hands slowly wandered up and grabbed her soft, voluptuous tits and jiggled them in her palms. “What I mean is what do you think of ME?”

 

Was the room always so hot? Oh gosh....Oh GOSH...Maybe another sip of wine will clear whatever is blocking your throat. “I...uhh...think you're sexy.”

 

Silence. Rarity let out a little sigh as she leaned in closer. “Is that all? One of the most beautiful mares in Ponyville and that's all you can say? 'Sexy'?”

 

“No no no!” You shout back. “Well, you're beautiful! A very cute face, wonderful mane, gorgeous body, killer curves...and....and....”

 

“Aaaannnnd?”

 

“...And a pair of tits that any stallion would die for....and an ass I want to squeeze so bad...and long, powerful legs that wont quit.” You could feel the heat on your cheeks as you confessed your lustful thoughts at last.

 

“Mmmmmpppphhh.” Rarity moaned as her hands wandered from her chest to her torso. “I....I can feel it.” Your eyes caught a red light glowing between her fingers. “I caught you staring last week.”

 

“...Huh?” You blurted out.

 

“I had popped a button on my blouse thanks to Rainbow Dash and as I was walking home, I dropped something. When I went to grab it, you were there.” Rarity was panting as the light faded away. “As you offered to help pick it up, your eyes were GLUED to my tits. Such a NAUGHTY stallion.”

 

That blush came back in spades, triggering the light by her fingers to glow bright once more. “You seem like a nice enough guy...academic, kind and with a nice body yourself.” Rarity bit her lip. “It feels so deceitful to go on without asking this one last question.” She stood up and let the nightgown fall from her shoulders. Rarity bared all of herself to you in the dim light. “I'm not quite a broken down old mare but I can still feel age creeping up on me. Do you really think an older mare like me is beautiful?”

 

“Of course.” The answer was out of your mouth before your brain could think. The light returned on Rarity's torso and without her hands to block it, you caught what was casting such a strange glow. A elaborate, winding mark was glowing red right above Rarity's womb. Your eyes widened as your studies helped you call upon what odd magic you were witnessing. “Wh...Lust and fertility runes?”

 

“Yesssss.” Rarity moaned as the magic burned itself into her skin. She was drooling as the magic invaded her body and mind. “Activated at the signs of lust, it shall bind two ponies together until their urges can be satiated.” Rarity threw herself at you, letting her soft, curvy body squish against you. “Darling....make me your wife and fill me up with as many foals as you can!”

 

“Wha!” It was all you could manage to say before Rarity forced her lips upon yours. You moaned into the surprise kiss as the moment of passion took you. Slowly, your hands lifted up from the chaise lounge and up to Rarity's waiting body. One hand cupped her soft, supple hips while the other couldn't resist grabbing one of her heavy, jiggly tits.

 

Another strange glow filled the room as the lust hit a peak. More runes flashed upon Rarity's body. The symbols for growth and beauty appeared on her chest and on her lower back. They drank in the arousal between the kiss, making Rarity's body grow softer and rounder.

 

“Mmm...do you like it? I figure if I'm going to turn myself into a massive breeding mare, I need the assets to match.” She grabbed your hand and used it to spank her ass hard. Rarity bit her lip as she felt her new bigger cheeks wobble and clap from the impact.

 

Your response was another hot, passionate kiss. Rarity pulled you from the chaise lounge and dragged you upstairs. Your shoes were left at the bottom of the stairs. Your shirt slumped down at the first step. The belt was left hanging on the handrail. Not even your pants made it to her bedroom as you continued to kiss and explore each other as best you could.

 

Rarity eased herself down on her bed and smiled. She spread her legs slowly, revealing how wet she had made her thighs. Rarity cupped her heavy tits in her hands and giggled. “Come on, stud. Give me a good show and tug those underwear off.”

 

Slowly, you pulled them down and revealed your stiff erection. It wobbled free of the waistband as quickly as it could, desperate for attention. “Ohhh yesssss. I want it...I NEED it.” The runes glowed as Rarity spoke. “It...Its so hot...Why?”

 

The runes all over Rarity's body began to glow as a strange magic filled Rarity's horn. A bright red beam hit your forehead straight on the tip of your horn. The room began to spin as endless pleasure began to fill your mind. “Lust...ma...magic.” You barely managed to whisper before it took hold of you completely.

 

New runes etched themselves onto your body. You accepted them with glee as a satisfying tingle filled your crotch. Right above your cock was the symbol for growth and fertility. Lightning shot up your spine as the same runes appeared on your ball sack as well. Everything felt warm. Everything felt right. Everything felt...heavy.

 

You blinked a few times and couldn't stop from moaning. The magic was working like a charm as your cock began to grow longer and fatter while your nuts swelled up with an intense load of cum. “Oh...Oh gosh....oh fuuuuuuck!” You gently wrapped your hands around your new dick and had to stop as a powerful spurt of pre cum launched from your cock.

 

“Must....BREED!” You moaned before running towards the bed. Rarity was drooling as you leaped onto the bed and grabbed her body once more. Sloppy, passionate kisses filled the bedroom as you savored each other while your bodies fed off each wisp of lust and longing. Every kiss made you harder, every kiss made your balls heavier. There was only one thing you could think of. Only one thing that would calm these sinful desires.

 

Rarity huffed and moaned as you raised up her legs and pushed them down to her sides. She was helpless to resist as your fat cock slid between her soaked lips and bumped against her clit. “YES! YES YES YES MATING PRESS ME! FUCK ME HARD AND RAW TILL I HAVE ALL YOUR CHILDREN!” Rarity screamed in need as your hips began to move and thrust. Even in such a submissive, powerless position, Rarity did her best to thrust and wiggle till your dick was sliding inside her.

 

You gave one last teasing thrust before slowly pushing yourself deep into her depth. Rarity squirmed and moaned with every inch. Her makeup was running. Purple mane a mess. Rarity's words weren't even words anymore. Pleased sputtering, sultry moans and irresistible squeals were all that could escape Rarity's mouth as you bottomed out. You fit together like two puzzle pieces. You were MEANT for each other.

 

It didn't take long for the thrusting to begin. As much fun as the foreplay had been, the magic runes on your skin demanded a finale. Your balls were beginning to ache from how full they were as they slapped against Rarity's thighs and cheeks with each thrust. Rarity could hear the lewd sloshing of your nut sack, moaning and whimpering with need with every pound against her skin. She needed it just as bad as you did.

 

Harder. Faster. You had to. There was no turning back from such carnal, primal desire. Breed. Fuck. Make her yours. She WILL be yours. It was the only thing going through your brain as the lustful magic kept a tight hold on your thoughts. The room was thick with the smell of sweat, arousal, and desperation. Rarity grabbed your arms and squeezed as tight as she could as her mind allowed her one simple thought.

 

“Fill me with your children.”

 

The dam broke. Your balls tensed up harder than they ever had before. Everything was spinning. The room was so dark. All you could do was push your cock as far inside Rarity as you could as the climax hit. You felt each huge rush of cum pouring through your fat cock. You could SEE each one as every blissful time you felt a new wave of cum escape your balls, Rarity's womb began to bloat.

 

It began slowly. First, a little bulge right where your cock was. Then her belly began to stretch as the pressure kept each drop deep inside her. Rarity looked like she had swallowed a basketball and yet her belly continued to grow. Bigger. Softer. The slosh from your balls had stopped as it began with every wobble of Rarity's bloated womb.

 

“Yeeeessss yes yes yes yesyesyesyes!” Rarity cried out as she reached out and touched her bloated, cum filled womb. “You're doing it....You're really doing it....Make me your baby carrying, milk leaking fucktoy of a broodmare! MORE!” She demanded.

 

Her words spoke to you in a primal sense. Even as you were deep in climax, you resumed your thrusting. The cum made it even easier to glide and pump into Rarity's tight pussy. The runes glowed bright once more as you felt your balls filling up all over again. “More...” You groaned as another huge climax hit you hard.

 

This time, Rarity's stomach couldn't stay modest. It ballooned outwards like it was made up rubber, growing rounder and more bloated. It began to sag just a tiny bit as the load was becoming far too much for any normal pony to handle. Soon, it looked like Rarity had somehow pushed a beach ball into her belly. Yet it still wasn't enough. You continued to thrust and the magic glowed again...and again....and again....and again until your body couldn't take it. You forced yourself to cum one last time before passing out hard.

 

It would be several hours later when your senses returned. You didn't know what time it was. All you knew is that the sun was peaking over the horizon and everything was sore. A fog was slowly lifting from your mind as the magic glow began to fade from the runes etched permanently on your skin. You looked over to see a smiling Rarity as she cradled a belly big enough to fit a whole pony. “Mmm...has...has the magic finally worn off? Is my sexy stud back in control?”

 

Bits and pieces came back to your conscious mind. Stripping off your underwear. That first thrust. The pleasure of filling Rarity up over and over again. It made you blush as your eyes couldn't look away from Rarity's impossibly swollen womb.

 

“The...The feedback loop. Everything was enhanced by the lust runes and we couldn't stop. We could have been stuck in an endless session of primal sex forever if our bodies could take it.” You mused.

 

“Not like that's a bad thing, Darling. It was wonderful.” Rarity cooed. “I...I do hope we can do this again. Maybe after I've figured out how many foals you just put inside me.”

 

“Oh....jeez....” You blushed hard. “That isn't a maybe, I for SURE impregnated you thanks to the magic...”

 

“Did you enjoy it, Darling?” Rarity asked as she rubbed her impossibly huge stomach.

 

“Y-Yes.” You admitted. A small tingle of the magic returned as you confessed your feelings.

 

“Good...I have a feeling we'll be doing this for a long, LONG time.”

 

 

 

 

 

 

 

 

 

 

 

 

 

Rarity moaned as you grabbed her wide, soft hips from behind. “I waited so long for this. Please....I...I need more of that addicting cum!” She cried out. The runes on her body responded to the raw lust even as she felt a bit of wiggling in her womb. That first night had given Rarity a lot to look forward to. Even on her knees, her belly forced her to lean back as it was too huge to properly stand up on all fours.

 

“You're insatiable, dear.” You teased as your hands moved from Rarity's hips to her swollen, life filled tummy. The doctors were happy to report at least six foals growing nice and strong inside their mommy. Rarity was only going to get bigger and more fertile in appearance, a thought that made the magic runes on your body glow with power. “Then again, neither am I.”

 

“Mmmmm!” Rarity moaned as you penetrated her from behind. “That's right. Give me more. Give your momma more cum!” The lust in her voice drove you crazy, forcing you to thrust as hard as you can. Cum was already pouring out of her plump pussy with just one thrust. “Make me huge, baby. I wanna be bigger. I want to carry even more of your babies! Fill this mare up with cum till she's about to explode!” Rarity begged. She moaned as she felt her belly stretch outwards with each word from her mouth. “Yessssss!”

 

It was a snug fit as you bottomed out as always. You two were made for each other both in mind, body and lust. Another thrust and Rarity continued to bloat outwards with cum. The runes were glowing at their strongest once more. It was going to be another long, hard, messy night, just the way you both liked it.