“Ow!” Nate yelped as he jumped up from the chair just as quickly as he sat down. He turned around to try to look at what pricked him in his pudgy butt, hands resting on his plump hips. Nate suddenly sputtered and moaned, face going redder and redder as he wheezed like a kettle. “Something’s wrong…-”
Suddenly, Nate was cut off by an incredibly loud rubbery squeal. His fat ass had, in an instant, practically tripled in size. His swollen cheeks hung halfway over the back of his booty shorts, one particularly puffy welt bulging where his butt had been poked. Nate’s shorts hung open in the front as his penis bulged with a similar intensity - his fat shaft ballooning like his rapidly inflating butt and quickly slipping free of his underwear.
“H-Heeelp!” he gulped, hands pawing at his swollen nuts as his ass creaked, groaned, and inflated, quickly stretching his shorts into more of a thong. His ballooning backside had become immense and taught in barely a minute, with the inflation starting to spread to his thighs, crotch, and belly. Nate’s pathetic moaning grew in intensity as his growing body puffed up in bursts, like an invisible pump had somehow attached itself to him.
Luke and Oliver watched in surprise, just as confused as the pudgy blimp. Beads of sweat ran over his skin as it flushed from the strain, his swollen belly bulging out in front of him with nearly the same intensity of his absolute shelf of an ass. Nate’s fingers had already begun to thicken, his palms soft and his knuckles receding into his fat hands. He grabbed at his ballooned penis - stroking it and letting out rubbery creaks and squeaks as he touched his taut skin. Between Nate’s engorged thighs, his ballsack expanded to the point of touching the ground - the shaft of his cock pressed firmly against the underside of his inflated belly.
“W-Whhherts ggooihhnn onn..” Nate huffed at his friends between groans, his swollen face causing him some considerable difficulty. His eyes bulged in their sockets, fat, swollen tongue lolling out past his plump lips. “H-Heeeewwpp… p-pwweeassee… w-wherrbbbts happenung toooww meeeww…”
“I… I dunno! What do we do?” Oliver gulped, glancing between the just-as-stunned Luke and the rapidly expanding Nate. “He’s… he’s inflating like a balloon!”
Accompanied by the sound of a rush of air, another huge burst of inflation hit Nate’s ass, similar to the very first. It blew his shorts apart and snapped his underwear, leaving him naked from the waist down. Nate’s asshole throbbed dramatically between his intensely inflated buttcheeks, his skin tomato-red from strain and coated with streaks of sweat. Each of his swollen balls were nearly a third of the size of the rest of his bloated body, spreading his fat thighs with their enormous, overpressurized girth.
Much, much wider than he was tall, the groaning blimp of a boy slowly started to become buoyant. His arms and legs had widened into little more than mounds against his rotund shape, his fat hands and swollen feet sinking deeper and deeper.
“Hhhhllllfff mmmmmrreee!!” Nate barely wheezed in desperation as his impossibly huge body drifted upwards at an increasing speed. The inflation in his ass had kicked into overdrive, each creaking, rubbery buttcheek on its own the size of the rest of his body. Sweat drops flew off of the stressed balloon, his swelling face squeezing his lips into a pucker. Nate moaned for help again, but only managed to let out a sound like a whistling kettle. “Ddhhhhff whnnna pppphhhpppp!!!”
Luke took a step back. “I think he’s gonna fucking blow, dude…” he mumbled, with a gulp. Luke’s cock started to get hard at the sight of Nate’s naked, groaning body. The fat-cocked, fat-assed blimp was turning both Luke and Oliver on to an extreme degree.
“I fucking hope so-” Oliver gulped as he felt his bulge throb.
Nate’s eyes bulged as the pressure started to reach an unbearable level, his grunting and moaning becoming more strained and intense. His entire, taut body heaved regularly as he blasted cum from his overstimulated penis - Nate’s pair of blimped nuts throbbed intensely enough that his friends could see them twitching from the ground. The light shone off of his sweaty, rubbery skin as his naked enormousness cast a shadow on Luke and Oliver, the world below him becoming smaller and smaller as his weightless, inflated body rose higher.
Still, Nate doubled, tripled, quadrupled in size - only growing more deliriously horny the more disgustingly ballooned his body became.
Oliver held a hand up to his forehead to block the light as he glanced up into the sky, watching his moaning friend continue to swell. He started to stroke his stiff cock, pulling it out from his pants as he vigorously jerked off. “Nate’s so fucking big - he’s gonna blow soon, dude.” Oliver moaned, precum dripping over his knuckles as he pulled at his shaft harder and harder.
“Yeah, he’s definitely… he’s definitely…” Luke mumbled again, starting to pump his own cock and unable to take his eyes off of his blimp of a friend. “...he’s definitely gonna BLOW!”
Luke and Oliver both started to moan, huffing and puffing as they stared up at Luke - their friend grew smaller as his massive body drifted higher, creaking and quivering under pressure until… BOOM!