This short clip comes from a user-generated soundboard rather than a clearly identified film, show or viral video, so its exact original speaker is not documented. That anonymity is part of why it travels so well online, because the phrase itself is instantly understood as a reaction to something unbelievable. Creators reuse it as a quick, reusable shorthand for shock in short-form videos, streams and meme edits, where a three-second burst of disbelief often lands better than a longer explanation.