Punch is a term used to describe a specific sexual act in adult films. This act typically involves one participant thrusting their hand, usually with a clenched fist or fingers spread out, into the other's anus or vagina. The penetration can be rhythmic and forceful, similar to traditional intercourse. "Punch" derives from this movement being likened to throwing a punch in boxing or other combat sports. This tag is often used by adult film enthusiasts to describe scenes involving this sexual act.