Each team can "bribe ref" twice per game (once in each half), after which, the bought referee will call phony penalties (e.g. 5-yard penalty for crying) on the opposing team. This will last for a few plays, but the other team usually tries to kill him (one of the Nasty Audibles that can actually be played at any time) immediately after the first dirty call. A slain Ref is then replaced by an even tougher one, who will promptly call another 5-yard penalty on the murdering team for Ref Bashing. Note that accidental referee deaths, such as being caught in the middle of a pileup, or nudged into a mine, are not penalized. Other penalties include offsides (encroachment also counts as this penalty), illegal kick, delay of game, QB bashing, and pass interference. All of these penalties are 5-yard penalties except pass interference, which is an automatic first down.