The Jack-in-the-box effect refers to a specific effect of a catastrophic kill on a tank or other turreted armored vehicle in which an ammunition explosion causes the tank's turret to be violently blown off the chassis and into the air. It is named after the child's toy, the jack-in-the-box, in which a puppet pops up. While relatively uncommon, it is a very visually iconic image of the complete destruction of a tank, and is thus seen often in movies, TV, and video games.