When on any of the Halo games on Xbox Live, or a multiplayer Campaign, that you rapidly squat up and down, giving the impression that you are humping someone else. Used mainly on Xbox Live to show ownage after killing someone.
Xbox Live player one: nah nah nah nah nahhh nahhhh! you can't kill me!
Xbox Live player two: *kills with sword* HAHA N00B! *has halo sex*
Xbox Live player one: ---
