Twilight's Sudden Big Tiddy Syndrome

A newspaper is thrown and hits into the front door of the castle, before the door is opened by Twilight yawning and stretching adjusting her eyes to the sunlight before bending down and grabbing the paper, and retreating into the castle.

Twilight soon opens up to read the headline.

‘Princess Twilight’s speech great success! Everypony loving her idea of friendship using big breasts! Approval rating through the roof!’

Well seems her speech has made front page and not in the way she wanted. She rolls her eyes quite annoyed by this turn of events. ‘Friendship by using big breasts?’ that has to be the dumbest thing they wrote but then again there was nothing else she could do. For all they know that was planned despite it being an accident, hopefully this doesn’t reach Princess Celestia and the ponies of Canterlot.

“Ugh why me,” Twilight complains, before throwing the newspaper aside. How can she show her face after this? All of Ponyville saw her expanded knockers, and she still hasn’t found a way to reverse or stop the effects of it. Instead she has been caught in an oddly arousing situations with her friends and has soon lead to them doing the deed. Speaking of which, where has Spike been all this time? She hasn’t seen him since breakfast yesterday which is odd considering the many duties he has here at the castle, so where has he been? She didn’t see him at the Royal addressing, and Starlight never mentioned seeing him or having him help look for her, so where could he have gone? Twilight gets up from her self mopping and goes off to look for him.

“Spike! Where are you!?” she shouts as she searches in the kitchen, the map room and library but to no avail. She soon feels her tits rumble giving a warning to her of what comes next. Well at least she isn’t out in public and considering that both Starlight and Spike have seen her with her jumbo jugs that it would be no problem now.

She soon makes her way to his room since that is the only place she hasn’t looked. She gives a knock on the door.

“Spike you in there!?” she calls out to no answer, she crouches down to look through the keyhole. Sadly she sees nothing before eventually feeling the second rumble in her chest, she sighs before removing her top as to not have it ruined like many of her other clothes. Besides no one is around so decency can take a back seat, however she still hasn’t found Spike, where could he be? Surely he left some form of clue as to where he went. Using her magic she easily unlocks the door before entering Spike’s room.

Walking in she notices the room is surprisingly clean, seems like he has taken the advice of that book she gave him. ‘How to get the mare of your dreams by keeping your room clean’ was one of the best presents she gave him considering how messy he use to leave his room before reading that. She quickly looks through his room trying to find some sort of clue as to where he has gone, perhaps that will be an idea of what to get him a journal solely for situations like this. However, she does find a big box under his bed only containing what looked to be a purple cylinder shaped object with the name ‘Pocket Ponut’ written on it and at one of the ends was a simulated mold of a white vagina, that has been used very well and considering the odd dried up off white stains used recently. Twilight slowly puts it back in the box not sure what to think about finding it but making a mental note to wash her hands after. When did he get it? And how did Twilight not know about it? Surely this wayward dragon is quite sneaky it seems.

However before long she feels her third rumble sighing as she knows what happens now with her melons ballooning slowly to a much larger size, good thing she took her shirt off because it seems to be going much faster without any form of restriction. They soon reach a double K cup, before Twilight flops onto the bed with her boobflesh wobbling as she lands. This is the first time she is alone for once without anypony walking in on her for once and some lewd shinanagaians ensuing. It does feel kinda good to be alone with nopony to bother her, maybe just this once she can enjoy the experience of it. She roams her hand across her expanded mounds, giving them light squeezes as her other hand follows suit reaching and teasing her areola before grabbing and twisting her tender nipple which sends a shock of pleasure that runs down her spine. A cute moan escaped her lips as her other hand gropes her right tit bringing it towards her maw to suckle on her purple teat, covering it with her own saliva before pulling and pinching her nipple in her other hand. This was nice it’s just her and no pony else, her snatch getting wetter by the second she continues to tease and play with her headlights completely left out and ignored from the fun. She can get used to these titanic jugs, after all Rarity always loved to show off her own cups despite never admitting to it and all the stares it would attract from the stallions followed by some glares from jealous mares. She lets out a happy sigh thinking back to yesterday when ponies were staring at her, mouths open in shock and desire, bulges and tents forming in their pants, minds slowly running with lewd fantasies of what they would do with her jumbo jugs. Dear Celestia just thinking about this was driving Twilight wild her pussy is practically gushing with her juices as she is thinking about this, and she hasn’t even touched herself yet but there is a great fire down there, that is yearning to be put out.

A loud banging noise coming from the closet causes Twilight to snap out from her enjoyment and immediately sitting up and looking at the closet.

“Spike?” she says before getting up and approaching it, before it bursts open and a figure rushes and knocks her over onto the bed.

“What were you doing in my bed!?” a slightly feminine voice questions, Twilight looks up trying to get a good look at the figure who rushed her. It looks like Spike with more softer features and a set of J cup sized knockers.

“Spike is that you?” Twilight asks unsure if this is the real deal or some doppelganger.

“Of course it is!” Spike yells back. “I’ve been grown these things and worst yet look what I am missing!” she shouts before getting up and pulling her pants down, to reveal a naked slit. “My dick is gone!” she cries.

“What!? How did this happen? And why were you hiding in the closet?” Twilight questions utterly confused as to what’s happened.

“Okay… here’s what happened, it all started after breakfast…” Spike begins.

Yesterday in Spike’s room after breakfast…

“Boy does Starlight make good pancakes!” Spike cheers, before lying down on his bed staring at the ceiling pondering on the events of last night. He doesn’t know what came over him, just seeing Twilight and those juicy melons made him go bananas, and while he did imagine he was doing it with Rarity the whole time, he did feel kinda embarrassed afterwards. But Twilight said it was a one time slip up and it won’t hurt their friendship, hell it might even strengthen it which is a huge weight off his chest. He lets out a sigh of relief before feeling a familiar sensation, seems thinking about yesterday and Rarity got him all hot and bothered. Luckily he has just the thing to fix that.

Spike leans over the edge of his bed searching for his box of ‘fun’ toys, in particular his favorite. The ‘Pocket Ponut!’ a very expensive toy he had to save up for months to afford. But it was all worth it for the pleasure and enjoyment he has gotten out of this thing.

He stands up to take off his pants kicking them aside for now before flopping back onto the bed. Positioning his toy right above his dragonic member, with it kissing the entrance of the fake vag. He lowers it slowly allowing his cock to spear right through it causing it to part around him engulfing his donger. He lets out a moan of pleasure as he continues his slow and even pace until his balls feel the plastic mold against them. He soon lifts it back up until only the tip remains inside before bringing it back down, finding an even pace to his masturbation aid. He barely even notices the rumbling in his chest that has happened twice as he is too distracted by rutting his favorite toy, slickening it up with his dragon pre cum, speeding up slightly eager to reach his peak. He hits his limit before shooting off his load into the toy flooding it with his dragon spooge as if he was trying to impregnate it, a goofy grin spreading across his face totally in bliss until he feels an odd rumble in his chest. He ignores it not thinking it is anything but slowly he feels as if his chest is…expanding? This drags him back down from his orgasm to notice what is going on, he scrambles to remove his shirt before panicking, he is growing boobs!

“What in Equestria!” he exclaims not knowing what to think as his newfound melons keep growing going past F cup, did he get the same thing as Twilight? How is it affecting him, wouldn’t this only affect mares? Whatever the case may be he finds his new found mammaries have stopped growing giving him a pair of double I cup breasts. “Well this is odd,” Spike thinks to himself unsure of what to think, he moves a hand to grope his own boob. It does feel like a real breast, but what caused it? He felt his chest rumble and they started to grow to a ridiculous size, originally Spike thought it was an odd spell Twilight misused on herself, but maybe it’s something else? Could it be a curse? Hopefully this isn’t permanent. Oddly enough Spike’s dick is still rock hard despite having just dumped a fat load of dragon baby batter into the fake pussy, could it be he is strangely turned on by his sudden growth of his own knockers? Well whatever the case may be he still does have his toy out, so might as well rub another one out. He soon picks up where he left off a task aided by the spooge he already let out, dripping down his cock and pooling on his sack. The tightness hasn’t faded for him as his dick throbs inside the plastic mold, while a clawed hand fondles his left tit drawing out a moan from him as he continues to use his mastabtory aid. He closes his eyes and lets his imagination run wild as he fantasizes about his first time with Rarity, of her descending down on his aching member and taking him whole in her supple cunt. With his hands reaching to feel her bountiful bosom, while thrusting upwards eliciting a moan from the beautiful mare, his hefty nuts pounding into her pussy lips each time he fully sheaths himself in her, her soft rump gracefully bouncing off his lap each time. Both panting heavily taking pleasure in each others sweaty bodies the smell of lust filling the room, along with the sounds of sex, Spike reaches to grab a firm hold on her boobs feeling a pressure rising in his shaft. Coming back down to Equestria and out of his fantasy Spike removes the toy before stroking himself to his release shooting thick wads of cum all over his belly and on his new found tiddies, covering them with his dragonic seed. His tongue falls out of his mouth as his eyelids grow heavy, the grip on the toy all but fading away as sleep takes him.

Hours later…

Spike slowly wakes to the sound of somepony banging at his door.

“Spike!? You in there!?” the voice calls out, it was Starlight and judging by the tone in her voice something was wrong. “I can’t find Twilight and her public addressing is supposed to start in an hour!” Starlight says with a shaking worry in her voice, she waits for a response from Spike but hears nothing as she sighs in annoyance before taking off to look elsewhere.

“Oh snap I forgot about tha-” Spike starts to say before cutting himself off. What’s wrong with his voice it sounds more feminine then it should be, he looks down at his chest before realizing he still has boobs albeit slightly smaller now at about what could be considered C cups. He slowly gets out of bed grumbling about this idiotic spell before looking in the mirror and turning his face into one of horror. “Ahhhhhhhhhhh!” Spike screams now noticing his body is more feminine in more ways than one. He now had more definitive curves to his body, most of his masculine features are gone and toned down to more softer features his scales were less rugged and more sleek. But worst of all his crotch no longer bared his pride and joy, now gone and replaced with a pink slit. “This is the worst day of my life, ever,” Spike sobs, now realizing he has gone from a dragon to a dragoness. How did this happen!? Why did it happen!? What can he do!? He continues to ponder as he paces back and forth, is it permanent or will it wear off? Either way he cannot be seen like this by anypony until it does wear off, hopefully.

“And that’s what happened, and ever since my boobs keep growing randomly!” Spike tells Twilight, shaking her as he still doesn’t know what is the cause of it.

“It’s okay Spike I can explain,” she says back to him. “It’s called Sudden Big Tiddy Syndrome, I originally thought it only affected one random mare but seeing as what happened to you it’s clearly contagious,” Twilight points out.

“Yeah I figured as much,” a voice says from the hallway, with both of them turning their attention to see who it is. It was Starlight and judging by her destroyed shirt and J cup jugs and angry expression. “I thought you said this wasn’t contagious!” Starlight complains.

“I didn’t think it was!” Twilight fires back.

“Well what are we supposed to do!?” Starlight questions.

“I don’t know, I am sorry all this happened,” Twilight apologizes realizing this is mainly her fault after all, she did bring this in somehow.

“Ugh why you didn’t tell anypony else is beyond me, we all could have looked into this instead of each of both of us fucking your brains out!” Starlight complains causing Twilight to turn crimson.

“Wait you two?” Spike points out.

“Yes we did, her tits expanded during her speech and then got horny afterwards,” Starlight explains before having a realization. “Wait, do you get off on this stuff Twilight?” Starlight questions.

“Uh well…” Twilight stammers out not sure how to answer.

“She was masturbating in my bed a few minutes ago,” Spike rats out Twilight.

“That settles it then, you Twilight Sparkle are a little slut aren’t you?” Starlight says with a devious grin plastered on her face, while walking into the room. “A horny little alicorn who gets off on her tits expanding to the point she would let anypony with a dick into her marehood,” Starlight teases, lifting Twilight’s head up with just a finger. “And since you gave us these big honkers it’s only fair we teach you a lesson for acting like an airheaded bimbo,” Starlight says lighting her horn up causing both her and Spike to grow dicks and balls respectively. The only difference seems to be while Starlight has grown a pink horse dick, Spike seems to have regained his lost cock. “Now be a good girl and suck our fat cocks,” Starlight commands pointing at her dong.

“Um well do I hav- Mppphf!” Twilight says getting cut off by Starlight’s pink horse member spearing past her lips, forcing Twilight to start sucking her off. Spike approaches in slapping one of Twilight’s cheeks with her dragonic dick eagerly awaiting her turn into Twi’s maw.

“Yeah suck it up like a good slut!” Starlight teases before grabbing the back of Twilight’s head and forcing more meat into her mouth then she can handle.

“Gluck! Glup, schluck!” are the only sounds Twilight can use to protest but she couldn’t help but feel a tad bit turned on by this, after her time with Rarity she did enjoy being utterly dominated by a mare with an intimidating aura to her, and Starlight has filled that to a tee. Twilight however does do her best to orally please Starlight, thrashing her tongue along the underside of the veiny intruder.

“Don’t hog her mouth! I don’t want to be slapping her with my dick all day,” Spike whines almost drawing the ire of Starlight.she pulls out allowing Twilight to get a few breaths of air into her lungs.

“Alright then have at her I am gonna pound that pretty purple princess’s pussy then,” Starlight says with a smirk on her face, using her magic to lift Twilight onto all fours on the bed and lowering her panties. Juices already flowing out of her snatch. “Sweet Celestia, you are this wet? You secretly are enjoying this aren’t you?” Starlight teases jerking her cock before lining up with Twilight’s love canal.

“Alright then, open up Twilight!” Spike says before ramming her dragon dick into Twi’s maw. Meanwhile Starlight begins spanking Twilight’s purple derriere leaving her handprint visible while her free hand strokes her dong keeping her erect.

“Guess it’s time to plow this princess’s cunt then,” Starlight teases before nonchalantly shoving her meat spear past Twilight’s purple velvet curtains and exploring her moisten depths. Twilight squeals a bit at the sudden penetration only to slightly gag on the slick dragon penis in her mouth, feeling her body being rocked forward when Starlight bottoms out inside her. “Oh I think our little slutty princess likes it rough,” Starlight notes feeling Twilight constrict around her.

“Oh does she?” Spike asks Starlight. “If so I might get a bit more rougher and make her take me deeper,” Spike claims as he thrusts forward, entering her throat. Depositting plentiful amounts of pre cum to lube his way and give Twilight a salty snack while she’s at it. Soon the two get quite rough with Spike pulling Twilight’s mane as she sucks her off and Starlight ramming her way into Twi’s womb and constantly spanking her purple jiggly bum until it turns from purple to red.

“Fuck yeah I could keep this dick if I get to fuck this slutty snatch everyday!” Starlight cheers speeding up to further ravage the purple cunt even more. Her balls hitting against the purple clit sending a tingle through out Twilight’s body further fueling the fire of her pleasure of being spitroasted by a horny dominating mare and a lusty dragoness. The duo take full advantage of Twi’s body drilling themselves as deep as they can go, constantly causing Twilight to rock back and forth onto the others rod taking an extra inch and a half of them. The room filled with the sounds of constant ‘plap plap fwaps’ each time Starlight’s sack slams into Twi’s entrance or when Spike’s nuts bangs into Twi’s chin. The scent of sweet and wild lust filled their nostrils with Twilight’s brain going blank between squeezing Starlight’s pink cock and sucking down Spike’s pipe. She could get use to this, just getting rutted day in and day out by these two, isn’t that what friends do right? Help each other out? Either way it feels good, maybe this is one of the positives of her whole syndrome, or maybe Starlight is right and she has just been a closet slut turned into a closet bimbo now due to her syndrome? Who knows might as well enjoy the fucking. She soon clamps down on Starlight’s invader as she sprays the pink nut sack with her feminine juices, and staining Spike’s bed.

“Oh cumming already?” Starlight teases, before grabbing and pulling Twilight’s tail to tell her to back her ass up a bit..

“Awwww damn that’s gonna take forever to come out,” Spike whines noticing Twilight’s juices are getting on the bed spread.

“You are getting sucked off, and are worried about your sheets getting dirty?” Starlight questions giving a hardy thrust followed by a spank to Twilight.

“Hey gotta have priorities,” Spike responds before fully sheathing herself in Twilight’s maw. “Fuck I’m gonna cum!” she proclaims as her cock throbs and twitches rapidly causing pressure to build up along his shaft. She pulls out slightly going from Twilight’s throat to her mouth leaving just the tip inside while her hand latches onto her rod and furiously strokes it to draw out her load. The first blast of dragon seed hit’s Twilight’s tongue giving her a nice taste, the second one hits the back of her throat causing her gag reflex to go off. Spike soon pulls out at the last second to finish all over Twilight’s face and massive mammaries, marking her as much as possible.

“Mmm Yeah you love dragon cum don’t you?” Starlight teases, watching Spike unload all over her. Using Twilight as a canvas, and Spike’s cock as a paint brush and her cum as paint she fully coats her and her tits before going back into her throat to shoot off the last remains. Doing so causes Twilight to gag slightly as her head is held down by Spike’s hands to the base of her crotch. Twilight’s eyes go wide as she coughs and gags forced to swallow Spike’s load, she ends up coughing some of it up onto the base of her crotch and some fall onto Twi’s jumbo jugs. “Swallow that dragons cum!” Starlight commands desperately humping Twilight, her peak just in sight.

“Fuuuck that was a good blow job,” Spike proclaims pulling out one last time, feeling her cock growing soft. She begins watching Starlight feverishly plow Twilight’s pussy in, her face determined to cum with her gritting her teeth. Twilight having been on the receiving end of this can only endure it as her poor abused snatch is further ravaged by the pink intruder, her tits and butt wobbling around each time Starlight fully sheathes herself inside.

“Ngh aghhhhhhhhh!” Starlight lets out as if it was some sort of roar to announce her orgasm as cum begins shooting out of her cock and slowly filling and spreading throughout Twilight’s vagina and even entering her womb. Starlight collapses onto Twilight’s back forcing Twi to support Starlight’s upper body and big boobers, while being filled with plenty of nut butter to the point it spills out and drips down onto the sheets.

“My sheets…” Spike whines quietly while she watches. Twilight sighs happily enjoying the warmth she is feeling while Starlight finishes dumping the last of her load inside her.

After some time Starlight passes out with her magic wearing off causing her cock to disappear while Spike’s mysteriously stays. And speaking of mysterious things their breasts still remain the same size not shrinking back down. It is then when a loud banging is heard from the castle doors.

“I’ll go get it,” Twilight said getting up and walking to the front, buck naked wearing nothing but cum and with mare spooge leaking out of her cunt.

She soon get to the door and swings it open only to be greeted by the sight of Rarity with no top on sporting a pair of what she can estimate as L cup size melons.

“Twilight I believe we have something to talk about,” Rarity remarks, with a glare in her eye.