Place this clip at the reaction beat after the mistake is revealed, not during the build-up. Lead into it with no no wait wait for a last-second warning, then follow with a wrong answer buzzer if the fail needs a final verdict from the edit.
關於此聲音
A 3.6-second voice clip of a man shouting “Fodeu… Fodeu!” in Portuguese, repeating the exclamation as if the problem has just sunk in. It lands as pure panic turned comedy, the sound of realising a mistake too late and knowing there is no easy way to undo it now.