A form of fighting in which each fighter places their hands behind their back and fights only with their head. Raptor fighting is traditionally fought in "packs" meaning teams of three on three. A "bash" is the term used for a strike with the head. Fighting is over when all three members of a pack are unconscious or when a member of a pack forfeits. Raptor fighting often occurs in unsanctioned one on one street fights as well.
"Yo this kid was talking shit so we started raptor fighting. We fought for like ten minutes, he was pretty good but when he tried to bash me I ducked and he knocked himself out on a chair"