Dreams of Heffalaroos 2

Pascal's worries were starting to become more and more real. Despite knowing he must be in a dream he was also very very aware of the pressure building up in his belly. He'd only been like this a couple of times and he knew the outcome. If Heffalacuda didn't stop the constant flow of cum soon he'd feel his belly button pop open. 

The two had changed positions eventually with the dog on his back and his belly distended heavily into the air, his navel pointing straight up. The strange roo was balancing on his tail again but had morphed it to the point where it supported him and gagged the poor dog. His maw opened up once again as the big fat penis hovering above him ejaculated once more. The scent was powerful to say the least, it overwhelmed his nose and drove his hormones through the roof. His red rocket was perpetually twitching and throbbing below his belly. 

The heffalaroo leaned in on the big belly and eyed the navel sticking out. It'd long since turned a deep red, a little purple showing up too. His trunk hovered above it and blew warm air down. The dog squirmed below him and whimpered in reponse. A smile crept across his face as he teased it with the warm air again and again, but it was time for the big moment. His trunk lowered and grabbed it, squeezed it, and rolled it around. He could feel Pascal swell more as he swallowed another heft load down, and in reponse the outie bulged outwards a little more. But as the trunk tested it he could tell it wouldn't grow again. 

He let out a dominant grunt as he came again, splattering the dog's face with another big load, then tightened his grip and tickled his throat until he heard an audible gulp. Pascal whined desperately below him and for good reason. The belly made a stretching sound like an over inflated balloon and the navel simply grew tighter and pulsed. With a visible heartbeat it would only take one more shot. His hands rubbed at the big white belly and he wiggled his hips in a taunt. 

Pascal watched as the dream roo's big balls swayed with his hips, the shaft wobbling stiffly. He let out a whimper as he watched the tip flare, he knew what was about to happen. It flared, it bounced, the veins on the side bulged outwards, and suddenly a gush of sticky white flooded his mouth. He tried his hardest to resist but he knew it was no use. The tail around his throat did its thing, and he swallowed. His eyes lit up as the pressure in his belly climaxed immediately, stretching and creaking like a balloon once more before a loud "POP!" sounded above him. He could feel a cool tickly feeling as fresh air met the rim of his ruined belly button, and cum shot out with force. 

This is the part he always felt sad about, because although the sensation was other worldly, he knew he'd lose his shape... and yet, the amount stuck inside him was enough to keep him tight still. 

"Wait what?" he thought, was this another trick? What was the roo going to do next if this wasn't the end?