He pressed the button again, but now focusing on his cock. It grew pushing the foreskin out of the way, leaving a huge slit big enough to swallow anyone. His pure muscle mass was leaving Matt in awe. His balls expanded tenfold leaving no room for Matt to see his cock anymore, it needed to get bigger.
Matt pressed so hard on the button that Bens cock inflated extremely fast. Inaudible moans were escaping from Bens mouth as cum squirted out almost drowning Matt. All over the walls, this just sped up the growth even more. His balls were now the size of yoga balls, still expanding, his long, fat cock inches on the floor, snaking it’s way across the floor. It stood at attention waiting for more. His muscle growths came in waves. Huge, even bigger, extremely huge. That’s the order.
“Fuck, man, your making me so hard right now.”
“ughhhh”
“Fuck, I’m gonna fuck you so hard”
Matt climbed on to Bens back, a mountain of muscle, and undressed. He first starting jacking off as he kept pressing the button, he then stuck his dick in the huge bubble butt of Ben, making him groan in delight.
“Aw fuck, oh man”
“Nghhh”
As Matt came everywhere, Ben grew insanely huge, pushing Matt up against the wall, while Ben was starting to push out the house. His cock and balls inflated and filled the space in his back garden.
“Oh fuck, what have I done?”