There is no single confirmed source for this short clip, so it is best understood as an internet reaction sound rather than a line tied to one film or show. The phrase itself is a common way to signal that a discussion is over, and that everyday familiarity helped it travel through meme edits, reaction videos, and short-form clips. Creators reuse it because it needs no context: the words alone close the scene, making it a compact shorthand for confidence, dismissal, and comic finality.