Mikey stripped him right there, leaving the heels on him but pulling the dress over his head. Jon looked down to see that his body was actually not like a doll's; his enormous breasts had nipples on the end, and a dainty hand exploring below revealed that he had female parts. His tiny body was not that of a doll, but that of a woman. "Wow. I've never seen a naked girl in real life before. Fancy it being you, Jon!"
Mikey laughed above him, making him blush and attempt in vain to cover himself up. His arms were pulled away by Mikey. "No hiding, Jonny girl. Maybe if you're really good, I'll let you be a real girl. Stand up." Teetering on the heels, he stood with his arms at his side, looking up at Mikey. "Okay, what do we do now, Jonny girl?"
Jon felt a huge thing entering his new vagina; Mikey had stuck a finger inside him, filling him. Strange foreign sensations overwhelmed him as Mikey slowly moved his finger around. He realized after a while that he was panting, and another of Mikey's fingers roamed around his body, settling on his tits. Jon couldn't even hear his panting, his mind going elsewhere, and he heard a distant scream, barely realizing it was his own.
"Eww!" Mikey exclaimed, pulling a sticky finger out of Jon. "What's that?" Jon just lay there, panting, unable to comprehend what had just happened.