Sky Diving

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

>”So, you’re going scuba diving?”
>”Uh huh! Check it out Bon-Bon! I got my flippers, swimsuit, goggles, and most importantly, my air tank! This is gonna be great!”
The cream colored earth pony raised an eyebrow, looking somewhat skeptical. The whole scuba setup, plus Lyra, felt… Wrong somehow… At least the oxygen tank seemed to be an actual oxygen tank, if the big O2 printed on the front was anything to go by...
>”Lyra-”
Before Bon-Bon could do or say anything else, the mint unicorn had already rushed to the door, spouting a few parting words along the way.
>” It’s not a Well, I know you have work to do, so I won’t distract you further! Bye!”
>”Lyra! Wai-”
>*SLAM!*
The candymaker grumbled, seeing that she wasn’t going to get any more information out of the nutty mare, she turned around, reentering the kitchen to finish her latest batch of lollipops. She mumbled under her breath as she pulled a metal tray out of the oven.
>”Always doing something crazy, that’s Lyra. Every one of her Celestia-forsaken schemes is burned onto my very soul…”
Bon-Bon shuddered, nearly dropping the tray.
>”...I have seen things nopony should ever have to see.”
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Lyra’s excitement would have rivaled Pinkie Pie, her master plan giving her the drive to move faster. Sure, she would get a few odd looks running down the street carrying a bunch of diving equipment while in nothing but a plain bikini, but hey, when was she ever not being looked at strangely? It was normal for her! She would just have to keep running till she got there, keeping a smile on her face the whole way…
Later, in a secluded clearing of the Whitetail Woods, far away from Ponyville…
>”Whew! I don’t usually run this much!”
Leaning against a tree, the minty unicorn took a moment to catch her breath and review her scheme, taking note of  dimensions, wind currents and the like. After finishing her mental checklist, she gave a satisfied smirk when she discovered every variable to be optimal for this particular experiment.
>”...Perfect, everything is perfect! I can’t believe it! Did the stars align or something? Oh, this is gonna be great!”
Still wearing her trademark grin, she looked to her discarded diving gear, singling out her target.
 Now for the most important part…”
She couldn’t help but chuckle evilly as she peeled away the fake label, revealing the true purpose of the canister on the label underneath:
 >AAA-Grade Compressed Helium. Great for balloons!
Lyra giggled.
>”I bet it will be!”
BREAK

Lyra shivered as the cold nozzle of the hose slide inside her, sliding her underwear back into place once she had settled. She took a deep breath, and with a crazed sort of hunger, desire, burning in her eyes, Lyra turned the valve.
>”Ooooh…”
The effect was immediate. Lyra’s whole body began to puff up, becoming lighter and lighter as she was stuffed with helium. She didn’t quite expect the experience to be so pleasurable, however it was a pleasant surprise to discover.
>”Wow… I feel so… Big, and tingly!”
Her swollen thighs felt especially sensitive, as rubbing them together sent warm, thrilling jolts around her form, that made her blush and yearn for more. A devilish smile crossed her face. Perhaps she could…
>”Aaahn!”
Reaching around her beachball belly to stroke the damp area of her bottoms yielded a wonderful squeak and a torrent of pleasure that coursed through her body like a lightning bolt.
Already quite hot and bothered, still trailing her fingers along her slick, inflating cameltoe in lustful earnest, Lyra was hoping that she would be able to get bigger, lighter, more sensitive…
BREAK

>”T-the tank’s only ten percent empty and I-im this big already? O-oh…”
The puffy lyrist was round all around, with huge puffy hips and thighs that rubbed and squeaked as they were forced together by their sheer size. Her belly had become absolutely massive and super sensitive, the lightest touch to it’s massive girth sending her over the edge. Lyra’s ass had become quite sizable as well, an impressive four feet wide. Her bikini bottom hugged and held her fat rump, keeping it shapely and perfect for digging her hands into. But Lyra was currently occupied elsewhere…
>”Aaaaaaah!”
>*Sqnnnnnnnnnk!*
The blimping mare’s arms shoved deep into her enormous milkbags, helium trickling out of her puffed up nipples in tiny jets as she mashed them together. Lyra couldn’t believe the sheer power behind the pleasure they generated, simply an overpowering amount.
>”O-oh sweet Celestia…Oh?”
The ballooning pone felt her feet leave the ground, her giant helium filled body finally lighter than air, but she still had quite a ways to go. The air tank only read 75%, and she planned to use it all…
BREAK

>”MMMMPH! O-oh sooo biiig!”
High up in the sky, Lyra Heartstrings was stricken with euphorics, moaning and squealing, her tongue lolling out of her mouth as the tank pumped all that it had into her puffy, dripping pussy. Her clothes had long since snapped off of her massive, full body, which had blown up so big, that her arms and legs were sunken inside it’s sensitive bulk, leaving only her hands and feet exposed. Even her head was sunken somewhat, forcing her to really strain to get a good view around her huge bulk.
>*Krrrrrrrrrrrrk…*
The pressure inside her was growing powerful, pushing outwards with a force that ruined Lyra’s train of thought with a missile of pleasure that bombarded her senses into lustful oblivion. She was soaking, dripping more cum from her blimped up vagina than any mare should as she resisted orgasm, determined to make the feelings last to their highest intensity; when the helium canister was finally empty.
>*Creeeeeeeeaaaaak…*
>”O-o-oh… I-I can’t take much more… Sooo biiig… Too biiig! Hah… Hah… H-how much is left in the tank?”
Well, Lyra wouldn’t be able to find out, but the big canister that hung from the hose like a spider was very nearly empty, about five percent remained. The question is, could she last that long? Would Lyra reach her ultimate goal, or would she pop or climax too early?
BREAK

Lyra’s immense, overinflated body loomed high in the sky as a blimp would, wobbling in the wind as deafening creaks and groans rang out from her stretched-out skin. Her body fought a battle to stay together, while Lyra herself fought her own urge to simply let go and hit her climax, gasping and moaning in pure ecstasy. The tank was at it’s final percentages, ready to give its all in a battle of endurance against the huge balloon unicorn…
But Lyra’s immense body had one trick up its bloated bulk, namely Lyra’s former innie. With a loud ‘pop’, Lyra felt the pressure inside her lessen the perfect amount as her belly button burst out of her blimped gut, puffing up until it was a blimp on its own, big enough to fit a whole other pony inside…
And just like that, the loud hissing, that had formerly permeated the air, stopped. The canister was finally empty; Lyra had beaten it. Now, at the biggest and tightest she could ever get, high in the sky, floating around like a lost balloon, she could finally-
A single, stray cloud brushed against Lyra’s tender, leaking,  puffed up nethers, tickling it a little too hard...
>”Aaaaaaaaaaaaaaaaaah!”
Lyra screamed in euphoria, socked in the brain by the most unfathomably powerful orgasm ever conceived. The overinflated, thin, fragile flesh that made up her pussy quivered and trembled as it gushed a torrent of pent up cum, leaving it slick and wet. It took a long time to die down, leaving Lyra gasping for breath from the squeals and moans she had let loose while the sensation had rocked her. Lyra smiled lazily, taking a deep breath as she basked in the warmth of the midday sun and the heavy afterglow of Equestria’s first ever perfectly calculated climax...
>”Totally worth it.”
END