No clear original source is documented for this short phrase, so it is best understood as a small online soundbite rather than a line tied to a known film, show or viral video. Its appeal comes from how easily the wording fits everyday delays, and short clips like this tend to circulate because creators can reuse them without needing any context. The humour is in the contradiction between promising to come and admitting it will take a while. That simple, relatable timing keeps it useful for reaction edits, memes and casual videos about waiting, lateness and slow progress.