screen check

A "Screen Check" or "Screen Checking" is when a cop in a patrol vehicle brake checks when a suspect is handcuffed in the backseat. Due to the suspect being handcuffed, and hands not free to block, the suspects face will smash into the metal screen divider of the patrol car. This will cause cutting and bruising and sometimes a broken nose.

The act of checking someone's side of the screen in a game, most notably first person shooters such as COD. It is also considered an act of total doucheness for you gain an advantage of the players location.