Cartman finds out Kyle's a girl by spying in the gym changing rooms. He doesn't tell anyone and Kyle doesn't know he has info on it either. Then the main 4 have a sleepover at Cartman's house and they play truth or dare and Kyle gets asked about her real gender... Kyle gets defensive and Cartman being the perv that he is reveals it by trying to take her top and pants off but it... Doesn't exactly work since Kyle slaps him
(cuz he's a tsundere bean)
