Put it right after the mystery object appears and before the reveal, then follow it with Ceeday Huh for a second question and close with Oh My God Wow once the purpose finally clicks.
About this sound
This is a short Danish voice clip, lasting about 2.6 seconds, in which a speaker asks what something can be used for. The plain, puzzled question feels bemused and slightly sceptical, as if the speaker is holding an unfamiliar object and waiting for a convincing answer.