"my next ones are 'Muscle,' 'Growth, and 'For Five Minutes.'"
"Hey, how come yours are always good?" Brianna asked, irked.
"Beats me," Maria replied. She could already feel the transformation occuring. She flexed an arm, which bulged with a new bicep.
"Alright, my turn then?" Brianna asked.
"No, you gotta wait for my change to finish." Maria could feel her already tight shirt getting tighter.
"So what, I'm just supposed to watch you grow for five minutes?"
"Yep." Maria sat down on the couch and let the changes occur. Her arms thickened and her biceps exploded. Her legs became strong and massively muscular. Her torso tightened into an 8-pack of abs. Her neck bulged as she hulked out even more. By the time the five minutes was up, Maria had put on about 100 extra pounds of muscle.
Brianna couldn't help but get a little bit turned on at the sight of her new, buff girlfriend.
"Heh, like what you see, huh?" Maria flexed her massive arms, which caused her shirt to rip to shreds, leaving her in a far too tight bra.
Brianna was now fully turned on by Maria. If she was still a guy, she'd probably have a boner big enough to pierce through her jeans.
"Y'know, there's nothing in the rules saying we can't take a break and... Explore our new bodies." Maria winked very obviously. Brianna was temped by the offer, and she wouldn't mind testing out her new female body, at least once.
Ultimately, she decided...