The unnecessary and mysterious pocket covering the crotch in men's underwear, usually tighty-whiteys. Useful for holding whatever men may wish to keep close to home.
Girl 1: I tried looking for tight and sexy underwear for my boyfriend, but I couldn't find any without the manpocket!
Girl 2: I love a man who wears a manpocket.
A sexual act in which one partner defecates into the other partner's mouth. Shortly after, vomiting will ensue. Whilst the "bucket" if firmly held shut, the first partner then fucks the other's mouth.
Once completed, the "bucket" will consist of Shit, Vomit, and Semen.