Twilight The Balloon Queen

Twilight The Balloon Queen by Anon The Writeslut AKA Writelut The Anon.
Note that "BREAK" signifies where the document was originally separated for 4chan.
Done based on request.

>"Urrgh... Wha... Wha… What has happened to Trixie?"
Trixie sat up slowly, taking in her surroundings with blurred vision. She seemed to be in the middle of a large room.
>"Twilight's castle."
The crystal decor gave it away almost immediately. Trixie started to scowl, but caught herself, remembering what had happened last night.
>"Feh, if Sparkle can extend hospitality to me after such a fiasco, then Trixie shall be an even better guest! Trixie uses the most grand of manners and is courteous above everypony else. And Trixie shall start by making the bed that Trixie rested upon!"
Trixie rose, and called forth a levitation spell to right the bedsheets, but no spell activated.
Trixie was shocked. Not only could she not use magic, but there wasn't even a bed in the room!
Come to think of it, there wasn't ANYTHING in the room! Including doors and windows to be exact.
>"What is the meaning of this!" "Trixie has been sleeping on the floor all night?! Trixie demands an explanation!"
>*flash*
>"Oh good, you're awake! I was beginning to worry that I wouldn't have enough time to-"
>"SPARKLE!"
Twilight jumped, startled by the furious unicorn, but quickly relaxed, realizing that everything was still going according to plan...
>"Trixie demands to know why she has been asleep on the floor of an empty room, and unable to use her magic!"
Twilight took a breath and went on.
>"... as I was saying, I was beginning to worry that I wouldn't have enough time to play!"
>"Trixie demands to know what you are-"
>"No time for questions! Here, Breakfast!"
Twilight summoned a small pill that she forced down Trixie's open mouth.
>"SPARKLE! WHAT HAVE YOU DONE!?"
BREAK

Twilight giggled but said nothing.
>"Sparkle! I demand an- oooh..."
Trixie felt a low rumbling emanating from her stomach. She hiccuped.
>"Spar-hic-kle, what is this?!"
Twilight smiled, and began to trot around Trixie as she started to explain.
>"Oh, just a little something I whipped up in my lab. I'm lucky that I got to test it!"
Trixie could only stare.
>"Elaborate, Sparkle, Trixie wishes to know what this medicine is to do to Trixie. Will it restore her magic?"
>"When did I ever mention that it was medicine?"
Trixie's stomach began to slowly swell, to the joy of Twilight who beamed at the little pudge. Trixie hadn't yet noticed, but that would change soon enough...
Trixie tried to, yet again, ask what Twilight meant by that, but was interrupted as duct tape was rolled over her mouth.
>"There we go! All plugged up with no way for you to belch out all that lovely gas! You not yelling at me is just a bonus!"
GAS?!?!
Trixie lunged forward, but found herself rooted to the spot. Her huge belly was pushing off the ground! Trixie struggled to regain her footing, but it was a failed attempt. Meanwhile Twilight could barely contain her glee as the hissing emanating from Trixie's swollen paunch sent her wild.
>"Oh how wonderfully big you already are! Mmm, you're gonna be the biggest balloon ever!
BREAK

Trixie gave a questioning look, as Twilight's smile faltered a little.
>"I suppose I should explain. You see, I have a... thing for balloons. Big ones."
Twilight pressed a hoof into Trixie, who was now four feet in diameter, and swelling faster than before...
>"A-and mares, too. You see, it's been my greatest dream to find a sweet marefriend who shares my passion for inflatables, so I spent years developing a specialized pill that would fill a mare to her very limits..."
Trixie belly was now five feet in diameter, and her legs were beginning to sink into her body...
Trixie moaned through the tape, beginning to feel the fullness stimulate her. She wiggled weakly, squeaking and stretching, sending shivers down Twilight's spine.
>"But yesterday, disaster struck! My student didn't arrive at a dinner with Princess Celestia of all ponies! Instead she went with you..."
Trixie shuddered in pleasure. Her hide was becoming translucent. Six feet in diameter...
>"The look the Princess gave me... I'm dead for sure! So I figured that I would at least fulfill my dreams in part before my end came..."
Trixie's growth lurched, causing her to jump to eight feet and squeal in pleasure...
>"S-so let's get started, my cute balloon <3 !"
BREAK

Twilight teleported out of the empty room, leaving Trixie to continue blimping up. She struggled weakly, half hoping she could escape, half hoping that she would continue growing.
Her belly was like a weather balloon, while her flanks had grown to the size of jumbo-beachballs. Sensing that her front hooves would be useless to escape with, she settled on pushing them into her giant belly, creating deep divots, and a lovely squeak as she squeezed herself silly.
By the time Twilight had returned, Trixie was fifteen feet in diameter and still blowing up! Her thoughts were clouded with the noises she made and the full feeling that surrounded her body.
>"Oh Trixie! I'm back!"
Trixie focused, and turned her eyes to Twilight's voice, and was met with a very strange sight: There stood Twilight, wearing black cloth socks and carrying small pump, but perhaps the oddest thing about it is what was around Twilight's legs:
>"Do you like them? I call it my 'helium lingerie'!"
Trixie was stunned. What she saw was a massive pair of black latex panties, clinging to her captor's flanks. Twilight turned around and wiggled her rear.
>"Rarity made me these after I accidentally revealed my, um, fetish, to her." They work great though! Sitting down on them is like a balloon being pressed into your belly, flanks and marehood!
Twilight shivered in anticipation, while Trixie swelled, nearly full. Suddenly Twilight dropped to the ground. Trixie rolled her eyes. It seemed that her captor was a little impatient.
>"Oh buck, I need this now, ooh, OOH!"
Twilight rapidly rubbed her hooves on the swollen latex around her crotch. She, gasped, bouncing up and down, panting and sweating. Suddenly she slowed.
>"E-enough, you've done this before, Twilight; Trixie is the real prize here."
Twilight magicked away her lingerie.
>"I had only meant to show them off anyway."
Regaining her senses, Twilight smirked at Trixie, now 18 feet in diameter.
BREAK

Twilight checked over Trixie, who was approaching her limits and making a barely audible groaning noise. Twilight shuddered as the inflation stopped, and the hoof she had pushed into the blue blimp showed that she had just the right amount of give.
>"Twenty feet! Oh Trixie, this is gonna be soooo goood!"
Trixie was quick to agree. She needed to be rubbed like the balloon she was, and her own hooves just weren't cutting it anymore!
Using her powerful alicorn wings, Twilight alighted atop Trixie's bloated frame with a drawn out creak. It was time.
Twilight placed her aching marehood flat against the taut hide. She squealed, finding the texture of the velvety fur to be perfect to the touch.
Slowly she began to bounce, up and down, up and down. The feeling was incredible to both Twilight and Trixie.
Trixie would be screaming if her mouth wasn't covered, but that was fine, balloons don't scream anyway. They just wanna be played with.
Trixie moaned as Twilight continued to hump her colossal body. each thrust sent a wave of pleasure that stretched her out, threatening to burst her.
>"Haaah, haaah, moooooore..."
Twilight moaned, lifted her whole body, and brought her whole weight down at once. Trixie creaked loudly and both mares squealed in euphoria.
>*Pop*
Trixie's former innie, made a cute little noise as it popped out from the pressure. Unfortunately, this meant less pleasure to the two mares.
>"Guh... Aha! Don't worry Trixie! There's a reason I brought a pump!"
BREAK

Twilight walked across the ballooned landscape as she made for Trixie's rump. Flying around the giant globes she spotted her target.
It was slick with fluid and swollen to quadruple its regular size. Twilight licked her lips, thankful that she could use magic to multitask...
>"I do like mares..."
Twilight dove for the full pussy, gripping Trixie to anchor herself, while simultaneously inserting the pump, bouncing against Trixie, and using a grand ethereal paddle to give the Jiggling rump a good slap.
Trixie moaned and groaned as the pressure increased, while the paddle sent ripples throughout her body. Twilight began to lap at Trixie's marehood with slow and deliberate licks.
Trixie was wrecked, so to speak. Unable to process any thoughts other than 'HARDER' and 'FASTER'. She creaked loudly and ominously, the pressure reaching a new high.
Twilight fared similarly, with each bounce and lick, more of her incredible mind was turned to lust.
>"Ooooh oooh, ooh aaaAAAAHH!"
Twilight climaxed, sending marecum everywhere. She slowed down, leaving Trixie hanging.
As soon as Twilight recovered, however, an evil smile crossed her face. She began jamming on the pump, pumping gallons upon gallons of air into Trixie.
The sudden increases in pressure sent Trixie into a frenzy, squealing and groping her swelling frame as her hooves sunk into her body.
She was so tight. I wouldn't be long now. The tape over Trixie's mouth fell off, giving Trixie time to warn Twilight of the danger.
>"Haaah, haaah, haaah, Twi-light! Stop pumping! Trixie is about to burst!"
Twilight only slowed slightly, but she flew over to Trixie's head to speak with her.
>"I'm sorry Trixie, my sweet balloon. You are a balloon are you not?"
BREAK

Trixie shuddered.
>"Yes! Trixie loves being a balloon! Trixie IS a balloon!" Don't pop Trixie, please!"
Twilight smirked.
>"Yes Trixie, you are a lovely balloon. But once a balloon is used it's only good for one more thing..."
>"meep."
Twilight grunted as she tried to force the final pump into Trixie.
Trixie creaked loudly, the sound haunting her of the final act of a balloon. she shuddered, groaned, moaned, wailed, and finally climaxed, just as the plunger went down.
>*POW*
BREAK

Twilight awoke hours later, to the sound of gentle snoring. Turning her head, she smiled as she saw her sweet balloon, quietly snoozing on the ground nearby.
She giggled, standing up. It was time to go. As she prepared to teleport away, she whispered to herself:
>"I'll be back tomorrow, my big balloon..."