when playing fallout 3 and you shoot someone/thing in the foot and due to the massive overpressure in the armor or skin builds up and releases in a completely unrelated part of the body ie: shot in the foot and the head and arm fly off
DUDE1: i totally shot that raider in the hand and his legs shot off
DUDE2: i know i do it to super mutants all the time gota' love bethesda physics