The exact origin of this clip is unclear from the available information, but it is widely used online as a short vocal reaction sound. Its stretched, squealing delivery makes it useful in meme edits, group chat videos and quick punch-in reactions where a normal gasp would not be exaggerated enough. Sounds like this stay popular because they are instantly readable, very short, and easy to drop over awkward reveals, fails or absurd visual cuts without taking over the whole joke.