Place it as the closing reply after the claim itself, not as an opener. Pair it before a WhatsApp message sound for a follow-up ping, then follow with Olha a Mensagem for a second check, keeping this clip as the main rebuttal in the middle.
關於此聲音
A spoken Portuguese voice clip lasting about nineteen seconds, built around the repeated accusation “Isso é fake news.” The delivery stretches the call-out far beyond a quick denial, which makes it feel funny, exasperated and deliberately over the top, like a friend refusing to let an obvious rumour slide in conversation.