You know that one genderbender porn trope where the more they cum the more feminine they become. Because I really want the reverse of that
i need a girl to get magically turned into a boy and every time he cums with his new dick he gets bigger and hairier and whatever. At first he's androgynous enough he can still pass for a girl and refuses to touch his cock bc he doesn't wanna change that, but he can't help but get curious. I mean, might as well try it out, right? Just once can't do much harm... and that feels so good, he gives in again, and again and again, until eventually he just can't hide what's happening to him anymore.















