Somebody who watches another person's screen when playing a split screen fps game, in order to give them hints on their location, or to know when they are coming for them. Causes very much frustration to the person who is being stalked.
John sprayed his gun through a random roof, and killed Tom. Although that was the game winning kill, they both new that John was a screen stalker.
ayon kay Coolcatsarecold ika-17 ng Mayo, 2010