The exact origin of this clip is not documented in its listing, so it is known online mainly through its use as a short confused reaction. The run together title reflects how the words blur when someone speaks in surprise, which helped the phrase become a shorthand for disbelief in edits and comment style videos. Creators reuse it for reveals, mistakes and moments that need a second look, and its brief, unfinished feel keeps it flexible across gaming, vlogging and meme formats without needing any context from a longer scene.
About this sound
A confused voice asks wait, what was that in this short reaction sound effect, used for puzzled moments, surprising reveals and funny video edits.
A confused voice stumbling over the words wait, what was that is the whole joke in this clip. The delivery sounds genuinely caught off guard, starting confidently before trailing into puzzled disbelief as if something strange just happened off camera. That hesitant, half finished phrasing makes it funnier than a clean line, because viewers instantly recognise the moment of trying to process something they did not expect. It lands best as a reaction, freezing the action for a beat and letting the confusion speak for everyone watching the scene unfold in front of them.