Place it at the exact reveal in a short edit, after you have set up the fake-out with Dun Dun Dun, then follow it with a quick reaction beat before moving back to the main scene.
關於此聲音
This is a 4.5-second sound effect clip titled Linguiça de Brinquedo, Portuguese for toy sausage. It is built as a short, goofy accent rather than speech or music, made to be tapped in the moment. Hearing it feels playful and silly, like a small joke landing without needing any setup or explanation at all.