No single film, show or creator is reliably credited for this clip, which has spread as a generic reaction sound on soundboards and in short-form edits. Its popularity comes from how universal the line is, requiring no context to understand and fitting almost any foolish moment. Short voice insults like this became staples of meme editing because they can replace a caption or reaction face, and this one is often grouped with other mocking cues like Nelson's HA-HA in compilations and stream soundboards.
About this sound
Short voice clip of a voice flatly saying you're an idiot, used as a blunt reaction sound for dumb mistakes, fails and jokes in videos and streams.
This is a very short, deadpan voice line that simply calls the listener an idiot, delivered in a flat, unimpressed tone with no music or effects behind it. The delivery is dry and immediate, like someone reacting in real time to a terrible decision or an obvious mistake. At under a second it lands as a instant punchline, cutting off any excuse before it starts. Creators use that bluntness for comedy, because the insult feels playful rather than angry and turns an embarrassing moment into a shared joke.