Gamerchat

A condition in which a person makes frequent typographical errors while gaming, for the most part disregarding grammatical errors that would otherwise take up valuable time to correct. This is typical when a player needs to focus mainly on the game and much less on their typing.

(In-game chat):

Player 1: Thisa gauyh as ilke 500 seigteanks in eed halpe@!

Player 2: Wtf dude, I could barely understand you...

Player 3: Gamerchat much?