The Superman is an old trick performed to humiliate whatever skank or girlfriend
you'd like to be rid of. You need some friends, a pillow case, and maybe some cameras for internet video production. After an evening of fun you wait until the mark is asleep and lying on her side. Take a pillow case, preferably red, and jerk off onto one end of it. Take the case and carefully hold it against her shoulders for a couple minutes until it's stuck good. Go out to the living room where your roommates/buddies are hanging out and set off the smoke alarm. Now yell very loudly "Fire!" and watch for the girl with the cape.
"I was done with that bitch and she wouldn't take the hint. Finally I gave her the Superman and sent the video to her parents."