The line comes from the 1998 Coen brothers film The Big Lebowski, spoken by Walter Sobchak, the volatile Vietnam veteran played by John Goodman. In the film Walter repeatedly derails conversations with rigid rules and absolute pronouncements, which made his dialogue a rich source for short reaction clips. As soundboards and meme edits grew, this brief dismissal was lifted on its own because it works without context: one character firmly rejecting a distraction. It endures because that function is endlessly reusable whenever an argument drifts off topic.