This sound has no single confirmed source and circulates online as a generic reaction clip, which is part of why it travels so easily between platforms. The line itself is a familiar English expression of disbelief, so listeners instantly understand the joke without needing any backstory. Creators reuse it for reveals, fails and strange discoveries because the delivery is short, clear and instantly readable. Its staying power comes from that flexibility: the same two seconds can sell surprise in a meme, a gaming clip or a short-form video.