From flat to phat

"This will be a fun..." Your heart stops for a moment as you hear Jamie mumble it for himself. You see as he presses an 'Enter' keyboard and looks back at you.

Seeing him burst into laughter does not make it even better. Your eyes fall down, scanning your body.

Your hair seems like usual - short brown. The face looks also good, as you recognize yourself in a glass reflection.

You scan your clothes. Your shirt is usual - short and tight with a floral design on it as you like it. You look back to your bubble butt. As you turn around it bounces, pressing tight denim shorts even further.

You like the feeling of a tight short make on your butt as they slowly slide up, making a tingling sensation run down your spine. Yes everybody sees a bulge of your penis in this type of short, but you never minded.
Not that your dick was something too big to fit it, but also nothing also nothing to be ashamed of.

You give your butt a quick slap to see it wave. The sensation of it makes you feel good. But it made Jamie burst into laughter, drawing the attention of teacher Alice.

"Something fun back there, boys?" She looked at us with her angry but also seductive tone, her skirt jumped up a bit as she quickly turned to look at Jamie, revealing her black thong under her skirt.

"N-Nothing Alice." Jamie quickly answered, trying to hold his laughter even more. Alice rolls her eyes and returns to the lecture.

Jamie laughed when I slapped my massive ass-check. Hey! This should be it! The change he made!

"You idiot! You've made me like to receive a slapping on my big bubble butt, don't you!"

Jamie nods in agreement. "It's a side effect of change but I think I can acknowledge it as a point for you."

His answer leaves more questions as answers. Side effect? It means he changed something else and this was a by-product of it.

"What you've changed about me?" You try to make him answer by pushing him back to a place as he tries to stand up. His massive tits bounce as he hit back a chair.

"If I tell you everything it means you've failed to guess the change and no points for you then." You realize that either way, you cannot change yourself back, and losing a point can result in you losing access to the app for a long time to get yourself back.

"Fine! Get back and watch Max change." Your massive ass perfectly fills a space on a chair in front of the magical Omni App.