No single widely documented source is attached to this brief clip, so it is best understood as a piece of online reaction audio rather than a line from a specific show or film. Short phrases like this travel easily on soundboards and in short-form video, where a familiar tone of mock disbelief can be recognised in a second. That portability is why it keeps appearing: it does not need setup, a character, or a backstory to make the joke land for a new audience.