With no clear single source behind it, this clip has circulated mainly as a short, shareable meme sound rather than as a line from a named show or film. Its appeal comes from how instantly usable the phrase is: almost everyone has waited for something to finish, so editors can drop it into unrelated videos and still be understood at once. On soundboards and in short-form edits it survives because it is brief, easy to recognise and easy to reuse, turning a everyday moment of impatience into a quick punchline.