Do not mess with Jamie Lynn Spears [1]! The actress and singer stopped a wild brawl [2] by picking up and wielding a 7-inch knife. While visiting a Pita Pit restaurant in Hammond, LA, last month, Jamie Lynn and a friend were stuck in the middle of a fight. Jamie grabbed a large knife from behind the counter and began to wave it around in an attempt to break up the melee. Watch the crazy scene unfold, and check out more must-see viral videos [3].