The room was colored a deep shade of red and the lights were dimmed. Inside there was a king-sized bed next to a night-stand and a red lamp upon it, along with a few other things, such as a red bed comforter and pink sheets to match up. Several pieces of mail scattered the room, however that was a given for a fellow mail deliverer. Said mail deliverer, a grey griffon with her head feathers tied neatly back, laid upon her own plush bed, on her back with her hind legs in the air and her talons on her cheeks, while her tail idly swayed from side to side, looking up and thinking as to what to do. The griffon known as Gabriella, or Gabby, sighed heftily and slowly sat up from her bed and looked around. Being all by herself, the griffon hummed to herself, thinking to herself on what to do next. Then, she blinked and gasped a bit. "That's it!" Gabby exclaimed as she looked upon the floor of her room, and looked around, knowing there was that thing she has been wanting to try ever since she saw somepony else doing it.

Searching upon the ground, all she could find were her discarded clothings and the scattered pieces of mail that the mail gryphon is scheduled to send off next week. The grey gryphon searched on the ground some more, to no avail. Then, to her wandering eyes did appear, under the bed, a silicone-like nozzle protruded from under the mattress. Gabby wasted no time, as she excitedly scrambled under the bed hastily to retrieve the item.

Gabby squealed in delight from inside the bed, nearly ear-wrenchingly so, as her gryphon-esque tail could be seen swaying from side to side rapidly, excitedly from under the bed if anypony could see her from that angle. Slowly coming out rear-first, her haunches first slowly emerged from under the bed as she struggled to drag out something. "Ngh...how can something so small weigh so much?!" Gabby exclaimed, as she heaved, grunting and struggling to pull out the object.

From under the bed, Gabby slowly, but surely, came from under the bed and strained to heave it, eventually pulling out a medium-sized cylinder full of some sort of gas. "Yes! Here we go! This should be fun!" Gabby said excitedly, as she grasped at the rubber nozzle and looked around mischeviously.

Gabby pondered, and rubbed at the tied up feathers that were fashionly tied behind her head neatly, to keep them from sticking out when she flies and fluffing around in her face while transporting goods, and delivering mail. Looking upon the cylinder, spotting a label that said 'non-toxic." Perhaps further investigation would be in check.

Upon further examination, there appeared to be small letters right on the brass tip of the air nozzle, where the valve was. Looking closely, the label appeared to say the word "Helium" on it. She did know that it was non-toxic, and that it was light in weight, lighter than air.. The gryphon shrugged, and grasped at the cylinder, and placed it upright.

Gabby grasped at the rubber hose that connected to the compressed gas of some sorts, and looked upon the nozzle. Regardless of what the substence contents were, she ran her talon across the tip of the nozzle, the silicone-like tip was perfect for what she needed it for. Giving a mischevious smirk to herself, she decided to get busy.

Without further delay, she quickly turned the valve's nozzle, allowing a slow but steady hiss sound to escape from the inner tubes and out of the rubber hose, hissing slowly and steadily. That same smirk stayed on her beak, as she slowly brought the soft, silicone-like tip downwards, clenching it firmly between her talons, the gust of cold-feeling gas whooshing against her dock, and her haunches.

Soon the nozzle made it to her upper haunch, right next to the dock of her tail. The cool gusts made her shiver slightly. Admittedly, this gryphon was quite nervous about what she'd do, but from what she's heard, it could be quite pleasureful. Inhaling slowly, then exhaling slowly, with one quick motion she pushed the nozzle closer.

The gusts of compressed helium brushed against her tail, ruffling up her tail feathers a bit. Inhaling sharply again, she held her breath. With one quick motion she quickly, and swiftly plunged the tip into her rear and almost instantly she shuddered from the sensation as the cold gas rushed inside of her. With the helium rushing into her insides, she laid on the bed, causing it to creak with her weight while she shifted and rested upon her side, feeling her insides fill with the light gas.

The sensation was unlike any other she's ever felt before, feeling her internals expand rapidly with each moment was an unexplainable experience that, you'd have to participate in said events to know how it felt. To Gabby, it started as an odd experience, however, over the course of mere moments, she would begin to feel the good thing about it.

"Th-this feels funny...b-but..." Gabby started, as she suppressed a groan of pleasure from her throat, her wings stiffening from the experience and became rather firmed. This threw her off guard for a moment, as this was an entirely new thing for her, in which it shouldn't feel like much of anything, aside from tons of pressure. Indeed, it shouldn't feel this great, but it did. It felt good and she was ashamed to admit it.

"Th-this is g-great!" Exclaimed the grey, bubbly gryphon to nopony, since there wasn't anypony around to hear. Nonetheless, she continued to indulge herself in her newfound kink, to the point where her inflating midsection's gryphonhood begun leaking feminine fluids from between her legs. Unbeknownst to her, she thought nothing of the warm liquid dripping down her inner thighs, trailing from between her legs and to the soles of her paws and onto the floor.

Feeling her abdomen begin to tighten, whereas her internals which includes her abdominal internals mostly, begun to inflate with more gas and air causing her stomach to churn and groan uncomfortably. Still, she digressed and proceeded anyways, keeping her saddlebag nearby, just in case. Gabby felt more discomfort as her stomach, and her bottom half begun expanding slowly, causing her to groan uncomfortably. The gryphon was unable to stand much more, as she reached for the nozzle to the cylinder with one of her talons, making grabbing motions at it.

However, when she couldn't reach due to the gasses inflating and expanding her rounded belly, which looked like she was quite bloated at this point, or like she swallowed a medium sized beach ball. Then she decided to use her back legs to reach it instead since they were closer. This proved to be a mistake, as when her left paw barely grazed the nozzle, the valve spun out at the slightest touch and spronged out of the brass housing.

The gas rushed in quicker, ten times faster now seeing as it didn't have a limit on how much compressed gas to expell out at once. Gabby squealed and whined. "Oh, no...He-UUURP!" Gabby tried to yelp for help, instead getting cut off by a loud burp from the air that traveled up her stomach and through her esophagus, and out her mouth, letting out a few more loud, long belches.

UUUUUUUUUUUURRRRRRRRK!!

AUURRRP!!

UUUUURCK!!

Gabby felt that calling for help was useless at this point, since it would get drowned out by her loud belching. Gabby nervously sweat as she begun to panic, the air only expanding her stomach further, even expanding her rear out rapidly causing her rump to balloon outwards, expanding rapidly with the gasses that rushed into her rear. "Th-this is Urp! bad...I gotta Bluurrp! Think of something..." Gabby tried to speak out between belches. Her abdomen, at this point was getting painful and begun to accumulate tight stretch marks across the midsection. Gabby was inflating rapidly, and her body wasn't compensating fast enough so she had to think of something, and fast. Then it hit her!

If she couldn't stop the gas, she'd have to compensate. Remembering she had gotten a potion from a zebra known as Zecora that would make her body more elastic so she wouldn't hurt herself, she quickly reached into her saddlebag, which was on the bed and pulled out a vial. Wasting no time, she uncorked the bottle and slugged down the contents of the flask. It tasted bitter but it would help the situation. It was a brew that would, hopefully, make her more elastic and allow her body to compensate for the massive gasses blasting into her abdomen.

Luckily, as panicked as she was, the potion seemed to work immediately, making her body more elastic by at least double, triple, even quadruple if needed. Needed she did, as at this point her belly was at least a 60 to 75 inches, seeming like it would take some time before she would indefinitely reach her limit. Then her flanks begun to rumble. Being focused on her belly at the time, she didn't even acknowledge any other part of her body, as good or as bad as this may feel. The gryphon's gaze met upon her growing flanks, making her eyes as wide as dinner plates.

It would appear in the time it took her stomach to expand to the size it was, her rear, her haunches, her back legs, her talons, her paws and even her once thin tail, had inflated to easily quadruple their original size her flanks resembling two large balloons that squeaked together with each movement, easily measuring much larger than her belly was, at least 100 to 220 inches in size with a big long squiggly balloon in between the hissing, squeaking cheeks. Her wings seemed rather stiff and inflated as well, from all this, exciting her moreso. "W-well...at least it can't get any- UUUUURRRRRRRP!" Gabby tried to speak, but was cut off by another loud belch from the air that traveled up her body and out her throat. Smacking her beak a little bit to deafen another belch, Gabby hummed a bit as she squinted her eyes and swished an odd taste around on her tongue, then gagged at the bitterness. It sure didn't taste like regular air, at least to her knowledge. Whether she knew helium was known to be bitter or not, she couldn't be sure. Whatever it was, it wasn't harming her, for now.

Gabby yawned as she laid there on her large bed,unable to do much else than that at any rate. She looked up at the ceiling, unsure of how long the potion she took would last for, though she did know it would last at least a day so she should be okay for now. Her eyes begun to flutter as she begun to grow bored, just waiting for that tank to run out as her body continued to grow. Gabby's eyelids begun to feel rather heavy, and before she knew it, the grey gryphon was fast asleep, already snoring a bit. Little did she knew, she would be asleep for sometime, as the gas hadn't traveled out her throat as she slept, so it backed up further.

~~~~

Seemingly, nothing but snoring would fill the area, the walls of her room, which was, for lack of better words, growing smaller with each moment. Gabby would prematurely awaken to the sound of her body straining and the sound of an alarm going off. Looking over to her right, she could see an alarm clock, and she hit the snooze button and begun to drift off to sleep, only to realize her body was feeling rather tense. Snapping her eyes open, she could see that she was suspended in the air, and had grown to quite the ridiculous size, as for as she slept, she must have grown twice her size as before, making her near the size of any hot air balloon, except this was helium instead of heated air. Still, heated air would be at least somewhat better. Gabby begun to panic as her body grew larger, though the process seemed to slow down. It would appear that she had slept through her elixir, which made her body less elastic. Her body had tightened and stretched far beyond it's limits, to the point where she could even see through her own self. "I-I gotta do something, fast!" Gabby squealed, as she examined her body. Her limbs now resembled little nubs with claws and paws on the ends, and her body as a whole resembled a 440 inch light air balloon that swayed in the air. That elixir sure did hold up, though she could feel the effects setting in, as she failed to see the side effects. She'd worry about that another time, as the tank of seemingly endless gas filled her up beyond proportions. Gabby pressed up against her roof as her body grew far too big for her own house, and, as she couldn't control her own growth, her form pressed firmly against the walls and, without warning, her body had won and busted apart her home.

Gabby wailed as she flailed helplessly upwards into the open sky, floating slowly upwards, though due to the tank's weight and her own buoyancy, she was only able to float as far as the rubber hose would allow her to, before keeping her held down. The mail gryphon was rather grateful, as she most likely would have floated away and elsewhere had it not been for the hefty, durable tank. There was still the issue that she was expanding with each moment, and now the potion's effects were dampening slightly, while her body tightened further. Opening her mouth again, wide, she went to scream for help, however, all that came out was a thunderous belch that could be heard for miles, in which it echoed throughout the seemingly empty town of Griffonstone. It seemed everypony and everygriffon was either in doors and not caring very much, or they were out elsewhere.

AAAAUUUUUUUUUUUUUUURRRRRRRRRRRRRRP!!!!

Gabby was surprised on how loud the pressurized helium escaping her esophagus was, considering she wasn't exactly an expert in that field. Gabby did deflate slightly, though that hardly mattered much, as she was still quite large, and still growing so the lost, light gas would make up for the spare space, plus some. Gabby knew her body couldn't possibly take it anymore, which was showing as her flesh and her skin became more transparent and shiny, able to see right through her. Gabby had to do something, and she had to do it now. Still being able to move her stiffened tail that was wedged between those two grey, ridiculously massive globes of gryphon flanks, she strained to move it, stiffly, as this proved to be quite difficult, and slowly, strenuously so, she managed to curl the tip of her tail around a loop in the hose. She mentally counted to three, and with one swift movement, the jerked her tail backwards and plopped out the hose. Now she was suspended in the air, above of the rubble and debris, the wreckage that was once her house. Since she had a bit of weight to her she didn't float far, though the wind begun to drift her upwards. Making feeble attempts to use her wings, which were puffed up to the fullest, she had no choice but to ride the current of the gusts of wind, until the edge of her paw caught a weather vane on top of some gryphon's house. She sighed in relief, as at least now she wouldn't float off into who knows where. "Well...A-at least it's not all bad...A-after all,I-It could be worse..." Gabby said to herself as she floated there, stuck to the weather vane. Gabby's mind begun to wonder, as she thought, mentally, that this couldn't possibly get any worse, as the tank was no longer attached to her. That is, until she heard a gurgle from inside her.

Gabby's stomach begun to hurt her fiercely, and her abdomen begun to rumble a bit. Groaning in pain, she would double over if it was possible. "Oough...I-I don't feel so good...w-wait a moment..." Gabby said to herself, remembering something about the elixer that she downed earlier. The grey gryphon recalled that the bottle said to consume moderately, as it was known to create abdominal pains and bloating, not to mention, gaseous. That would explain the burping...though that wouldn't explain the churning sensation. Gabby groaned as the gurgling only grew louder in her stomach. She felt the bloat coming up, and her body was going to react naturally. Gabby thought for a moment, and she didn't exactly have to burp at the moment, not to mention that she couldn't do it on command without throwing up. That only left one other option. The gryphon's eyes widened as she shook her head, clenching and tightening her body the best she could. Her body wanted to get rid of the excess pressure, and one way or another, it was going to do just that. Her body begun reacting more, trying to push the gas downward, and out. "No! I-I can't do that here!" Gabby exclaimed, which only intensified the pain in her abdomen.

Gabby knew she couldn't hold it in forever, though she was going to try her best to do so anyways. She strained, sweat accumbulating around her body, which formed around her rapidly rumbling gargantuan globes that were her plot cheeks. That tail of hers begun to twitch,forcing her to strain harder. Those two giant spheres vibrated and strainedm as the pressure only grew greater inside by double. Seeing as she was already on the brink of giving in, this discomfort only made it that much harder, even as her belly slightly expanded with the pressure, and the natural gasses building up inside her, in addition to her already massively inflated body. Gabby whined as she squinted her eyes shut tightly. "I...can't hold it back much longer...!" Gabby exclaimed, as her tail twitched and flickered, allowing a faint squeaking toot to emerge from between her plot cheeks. "Here it comes...!" Gabby said, inhaling sharply, and holding her breath as the pressure simply became too much for her.

With that sentence, the gryphon's flanks loosened, and her tail rose instinctively, one gasp is all Gabby could do before an enormously gargantuan explosion of toxic gas begun to violently rush out of her backside in one huge fart that quickly propelled her forward, and completely blew over the house she was stuck on and just about anything else that was in her way as she plowed through many houses.

KRA-KOOOOOOOOOOOOM!!!!

BRRRRRRRRRRRRRRRRRRRRAAAAAAAAAAAAARRRRRRRFFFFFP!!!!

Gabby's form could be seen flailing through the sky as she was propelled forward by the force of a jet engine, metaphorically, surely, as she took off to the sky, propelled by her own back-blasts with a rediculous amount of force that seemed to endlessly expell and spew out of her rump with so much force, that it started to make her flanks sore. All she could do now is ride it out, while covering all of gryphonstone in a smelly gas that blew out of her. The gryphon was on a trip she would most likely not forget for a long time, nor will any of the other gryphons in town once they return.

Gabby whailed as she crashed through another house, and flew directly out of gryphonstone.Eventually, Gabby propelled herself so far, that she was crossed the large body of water that separated her from other parts of Equestria. First she passed through Baltimare, then Fillydelphia. Soon she reached the all-too familiar Ponyville, still erupting an explosive, long fart from her backside. She made a dive by angling herself midflight and crashed into the Everfree Forest, where she piled through many trees and got caught by a rather large tree that wrapped around her back paw.

Hours turned into days, as after a few hours of pure farts that polluted the whole forest, the town, village, city, from Gryphonstone all the way to the Everfree Forest, her body finally begun sputtering, and deflated down to a managable level, to which her rumb finally sputtered out, and haulted once seventy-five percent of the gas left her body, allowing her form to fall limp on the ground, and her skin to appear saggy. Curling herself up in her own skin she curled up into a ball on the ground, and shivered, feeling rather cold, and ashamed of what she just did. "Well..at least nopony was around to see it...oogh..." Gabby groaned, letting out one more final, loud, bassy, 30-second fart that echoed through the entire city and beyond.

BLLLLRRRRRRRRRROOOOOOOOMPH!!!!

With that, almost all of the gas has left the gryphon's system. Nightfall begun to emerge, as Gabby sighed heavily, and stood up, walking out of the everfree forest and onto a green meadow to watch the moon rise and set, to stargaze. She laid down on the grass and curled up into a saggy, grey ball.

Around the area, there was a putrid stench that filled the air, so thick and vile one could question how this could come out of a single gryphon in one day, which would most likely last all week. Unbeknownst to Gabby, everyone in Ponyville seemed to watch the whole scenario from their homes, watched as Gabby soared through the skies projected my her flanks. It was done with now, so there was nothing Gabby could do but hide, and wait it out, hugging herself in the ball, as a few encouring weak poots escaped her rear.

Prrnt, prrnt.