Place it right after the on-screen question in your edit, then follow it with the bruh sound for a second failed reaction beat, or let a game show buzzer close the sequence if someone keeps guessing.
About this sound
A short clip of Siri's synthetic voice saying she does not know how to answer that, delivered in a polite, flat apology. It feels funny and a little awkward, like a machine giving up on a question it should handle easily. It comes from Apple's voice assistant response for unanswerable requests.