When a group of at least 4 males masturbate to ejaculation into a wine glass, and then pour it onto an unsuspecting sleeping, or passed out (drunk) females face at a party. Usually a passive aggressive way to settle a score.
Joe: Man, that cunt Abby just slapped you in the face dude..
Chris: I know man......You thinking what I'm thinkng?
Both: Cocktail Party!!!