Place it right after the questionable line in a reaction edit, then follow with a huh sound for confusion or end on a damn meme sound for the final reaction from the group.
關於此聲音
The clip is a short spoken line, just under three seconds, where a voice asks 'what you mean by that' with clear disbelief. It lands as funny and suspicious at once, turning a casual remark into a challenge that makes listeners pause, laugh, and wait for an explanation that probably will not help.