The exact source of this “what is that” clip is not clear from the available information, but it is widely used online as a reaction sound for confusion and instant disbelief. Short vocal reactions like this spread easily on meme pages, repost accounts, and edited videos because they are easy to recognize even out of context. Its staying power comes from how flexible it is: creators can drop it over awkward reveals, odd sound effects, or visual punchlines in the same way they use a bruh or a buzzer.
About this sound
A short startled voice clip saying “what is that,” used as a reaction sound for weird reveals, sudden noises, confusing edits, and unexpected meme moments.
This clip is a quick reaction line where a surprised voice blurts out “what is that” with a sharp, confused tone. It is short, direct, and instantly readable, which makes it useful when a video cuts to something strange, ugly, suspicious, or hard to explain. The delivery sounds genuinely caught off guard, so it adds a mix of shock and disbelief without needing a long setup. In edits, it works like a verbal double take that tells the viewer exactly how to react to a bizarre image or sudden change on screen.