Place it as the nonsense reply after a shocked reaction in an edit, then follow it with a goofy yell to keep the joke moving. Use the shocked sound to set up the surprise, then let this clip answer it before the yell closes the bit.
關於此聲音
This is a short, just-over-three-second prank clip built around a garbled vocal burst that sounds like someone blurting out nonsense letters in one rushed breath. It lands as sudden, silly confusion, the kind of noise that makes a listener pause and laugh because it means nothing and arrives out of nowhere. It works best as a quick interruption rather than a line anyone needs to understand.