Half-Assed Superman
When a man goes to fuck a girl in the ass, but puts his cock only half-way in, then throws up all over his cock and the girls ass, and continues fucking her.
Person 1: "Dude, I did a half-assed superman with my girl last night!"
Person 2: "Ew! That's fucking sick!"
Person 2: "Ew! That's fucking sick!"