Seems to be a Second Generation Massively Multiplayer Online Game (MMORPG) phenomenon that only appeared as of the release of the game Dark Age of Camelot. May have originated on that game's "Vault Network" forums (now vnboards.ign.com) but could just as easily have appeared earlier in-game.
Is most often used to mock a notion as being oversimplistic or another individual's actions as having reflected a tendency to take the easy road to a win.
omg zerkers4tehwin!!!111! wtf so uber!!!11!!