No confirmed source has been documented for this one-second 'not now' clip, which circulates as a user-uploaded soundboard effect rather than a line from a known show, game or film. Its life online is simple: the annoyed delivery fits anywhere someone gets interrupted, from gaming montages and reaction compilations to short comedy sketches. Because the line is so short and instantly readable, creators keep returning to it as a quick comedic shutdown, and it continues to pick up plays whenever a new wave of interruption memes makes the rounds.