Originally coined by some idiot who kept saying it in chat. Originally meant nothing. Now it is a word used to get the other person (typically a streamer) to say the word back without knowing its part of the game.
in table football when a ballis hit and intended to go forward changes direction and ends up in the players own goal. Named for its creator MR. Wheater himself
Wheater: " im gonna beat you at a game of foosball!"
random: "I accept your challenge!"
Wheater: (hits ball)
(wheatertastic occurs)
Wheater: Oh no my attempt at a goal has backfired! My name will forever now be remembered with ridicule yet respect.