There is no widely documented film, show or viral video origin for this clip, so it is best understood as a short reaction sound that has circulated on soundboards and in short-form edits. Its appeal comes from how instantly the phrase signals doubt, making it a handy shorthand for creators who want to flag a dodgy plan without a long setup. At just over two seconds long, it is easy to drop into memes, streams and reaction videos, which has helped it stay useful long after its first uploads.