to jerk off on a girl's back while she is sleeping, on her stomach. and then suddenly wake her and have her roll over. once she stands up the blanketwill be stuck to her back resembling the cape of superman.
an after sex prank, where the guy allows the girl to fall asleep (usually on her stomach), he then ejaculates on her back and covers her with a sheet, allowing it to attach to her back like a cape.
Ayo, after I nut, imma supaman that hoe like YUUUUUUUA!!!
a hard ass from the streets kinda like superman on movies but the G from the streets neva scared always got money and handles beef like it aint shit also a known rapper putting out cd that kik ass