In a Golf Foursome, one player is teeing off and the three other players go behind the tee-box and pull down there pants to moon, while smacking there ass with hands creating a clap after the player has hit the ball. The unsuspecting player turns around thinking it's an applause to only see butt cheeks mooning him/her.
My friend was driving from the tee-box while three others were performing a Mexican Golf Clap.