Naka waddled clumsily to the middle of the park, the little Balloonfox had been told to wait there by Jellybean. Naka climbed up onto a bench, and sat down, gently drumming on his belly while he waited.

Jellybean arrived a few minutes later, carrying with him a hand held bike pump, and a playful energy.

"You ready to be a big blimp, buddy?" Jellybean grinned.

"I'm always ready!" Naka gleefully responded, hopping from the bench with a light bounce.
"Although, I don't know if we should be doing this out in the open…" he squeaked, getting a little embarrassed.

Jellybean nodded with a big toothy smile, and put the nozzle of the pump into Naka's mouth.
"It'll be fine, don't worry" Jellybean responded, patting the balloonfox's balloon belly reassuringly.

The balloonfox wagged his tail, feeling a bit relieved. "Jellybean knows what he's doing." He thought to himself.

The small wolf started pumping slowly, Naka's cheeks swelled, the air flowed down his throat, into his round tummy. Steadily, he began to bloat up.

"How are you feeling so far?" Jellybean asked as he continued to pump.

Naka gave a thumbs up in response, his tubby belly looking a bit brighter, shining a little under the sun.

"Alright then! I hope you don't mind me picking up the pace."

The playful wolf accelerated his pumping, Naka quickly doubled in size, his stance looking more unbalanced and wobbly.

The pumping continued, Naka blushed, his cheeks getting big enough to push his goggles away from his eyes, his arms getting harder to move. Naka's belly swelled and groaned, the big blimp rolled forward onto his stomach, tickled a little by the grass beneath it, giggling a little, causing some air to escape from his mouth.

"Don't let the air out, silly!" Jellybean teased, patting Naka's belly, making very huge, deep drumming sounds, before getting back to pumping.

Naka's belly ballooned more and more, growing to around 10 foot wide, the sizable fox had attracted the attention of a few curious observers.

A crowd grew quickly, as did Naka's body. He wanted to cover his face in embarrassment, but his fat, tube-like arms would no longer reach.
His wolf friend kept pumping, completely ignorant of the plentiful onlookers.

"He's so big…" someone said

"Is he okay?" Questioned another.

"Is this safe?"

Some people were staying as far away as possible, while others were using their phones to record videos of this strange event.

The pressure in Naka's body was building up, his ears had bulged, making it harder to hear anything but the groaning from inside his belly, his goggles had slipped off his face, and his fingers like big bubbles poking out of his hands. Air was forcing its way out of the corners of his mouth with each pump, he felt lightheaded.

Blushing even brighter, Naka's body squeaked, his limbs sunken into his enormous form which had grown to around 17 feet in diameter, showing some slight signs of overstretching.
His neck had puffed up, looking like a fat, airy ring between what would be his shoulders if he had any, and his swollen, puffy chin. His fur was all standing on end, his paws were round and orb-like, his tail had also swollen to a spherical shape.

Jellybean showed no signs of slowing however, despite the increasing difficulty of pumping air into the nearly full Naka, he continued, The giant blimp of a fox groaned and creaked, he had reached 20 feet in size, 10 times larger than when he started!

Jellybean cared not for such a milestone, and struggled on.

Naka's eyes opened wide as he felt another rush of air flow into his sensitive balloon belly, which was becoming reddened by the pressure inside, along with his cheeks, which squished against his muzzle, forcing it shut around the nozzle in his mouth.

All he could hear was the sound of the pumping, and the loud groaning of his overinflated body.

Most of the crowds of people had run away, as Naka's body steadily approached it's absolute limit, groaning and tightening…

BOOM!

Jellybean and the few others who stayed to watch were all knocked back by the explosive wave of air, their ears ringing from the noise as various bits of fluffy cyan and white confetti rained down gently.