Place it immediately after the doubtful claim in your edit, then follow it with the Awkward Moment Sound Effect to stretch the doubt, or cut to the Eh Eh Ehhhh Meme when the claim gets even stranger.
關於此聲音
This is a very short VTuber voice line, lasting just over a second, in which a high-pitched voice asks in playful, heavily accented English whether you really believe what you just heard. The emphasis lands on the last word, giving it a teasing, sceptical edge that feels both innocent and mocking. It works as a quick, funny challenge to a doubtful claim.