Someone who uber lags in a realistic game such as Counter-Strike Source and gets pwnd during his lag spike. Before he gets pwnd, however, someone unloads a full <insert CS:S weapon> clip in his head. This is when people say WTFLAGNOOB, because they lost all their ammo.
Random CS:S player: <stands there>
AWPer: <headshots noob>
Random CS:S player: <stands there>
AWPer: WTF hax omfg <headshots again>
Random CT: I think he's being a wtflagnoob.
AWPer: <headshots again> this sucks omfg
Random CS:S player: <stands there>
AWPer: <finishes off clip> wtflagnoob
1. Acronymn standing for "What the Fag?" Used to exclaim utter shock and disbelief. Used in the rare occurance when no discernable explaination can describe just how gay someone is/has/or will be.