Definitions by soundwave
sit on it
Used in reference to sitting on something in a sexual manner. The phrase first came into being during an episode of "The Girls Next Door" when Hef's new twin girlfriends were doing a sexy tennis photo-shoot. Both were holding tennis racquets and the photographer asked them to do something different. One person who was watching the show shouted, "Sit on it!" in reference to the girls sitting on the tennis racquets in a sexual manner.