Brad lay on his floor, rubbing his huge gut. He was so fucking fat now. It was a little hot, especially because he wasn't going to stay this way. His new beefy friends were pushing their big bellies and swollen muscles into him as they leaned into him and rubbed his gut. He could feel Francisco's huge dick pressed between his gut and Francisco's own. Marco was pushing a big slice of cake into his mouth.
He felt a pressure on th side of his belly, then on the top as the massively muscled Francisco climbed on top of his gut, then was joined by Marco. The two men were able to sit on him like he was a giant mattress. "So Brad... what do you think?" Francisco asked. Brad grinned and chuckled. "I like it a lot actually. It's got a drawback though. I could never have sex like this."
"Well, that's not exactly true." Marco said. "You can still have sex, but it'll be different." Marco winked at Francisco, and they climbed down and walked behind the behemoth Brad. He felt four strong hands begin to push on his back, and he started to roll forward. He lurched forward and plopped down on his huge gut. He lay on his stomach. suspended about 2 feet from the ground by his big belly. He heard Marco and Francisco speaking behind him.
"Yeah, his ass is pretty huge, I should be able to do it with how big I am now though. You take the front." Brad then heard one of the huge men plodding by him and walking right in front of his face. He found himself eye to eye with Marco's huge dick. "Open up, Brad. You're about to experience what kinds of sex you can experience at this size."
Before he got to say anything, he felt a massive rod push into his ass. Francisco moaned, he was already at work. Brad opened his mouth in pain and pleasure, and when he did, Marco's big dick pushed in. He had no real choice, not that he would've picked any other way. He sucked and Francisco pumped. Each movement caused his big body to jiggle. This felt amazing.
-----------------------------------
Marco tried to fit into the clothes that Francisco had brought for him. No luck though. That spell that Brad read made him stuck this muscular. He was a freak, but he liked it. 400 pounds of solid muscle was excessive, but at least he was mobile. Brad was normal again, and so was Francisco. They were saying goodbye as Marco attempted to button his jeans.
They finished their goodbyes, and Francisco walked to the door, Marco sauntered after him, trying to navigate his new thighs around each other. The once baggy jeans moaned and popped seams when his big legs flexed. He shook Brads hand and walked out the door after francisco... what would they do next?