The act in which a female wearing a blind-fold lays with her head hanging off the side of a bed and a male, or multiple males, ejaculate in her mouth. This act refers to the notorious torture technique, "waterboarding".
Guy 1: I wanted my girlfriend to break up with me, so I gave that slut a Guantanamo Bay.
Guy 2: Did it work?
Guy 1: No, she loved it.