Place it as the response beat directly after the line you are reacting to, not as an opener. Follow it with the Ceeday Huh sound for a second confused reaction in the same exchange, or put a Sudden Suspense sting before it to build toward the reply.
關於此聲音
A short Polish voice clip of someone asking 'Kto tak mówi' — who talks like that — delivered as a quick, pointed question in about three seconds. It lands as confused and mildly disbelieving, the kind of reaction that calls out a strange take without needing a longer argument or explanation afterward.