Place it at the end of a clip showing the bad decision, after the mistake is clear, then follow it with Nelson's Ha-Ha! for a mocking finish or the Wrong Answer Game Show sound for a quiz-style fail. For a different reaction, use Oh My God Wow before it to build surprise.
關於此聲音
This is a brief spoken warning, just under two seconds long, in which a voice delivers the line 'don't be a jackass' plainly and directly. It lands as a blunt, teasing scold rather than a shout, funny because it states the obvious with total confidence. It works best as a quick call-out for foolish behaviour, cutting through a joke or a bad take with one sharp line.