Place this clip after the build-up and before the payoff in your edit, then follow it with a You What reaction for the response, and save a DJ Airhorn hit for a later callback if the joke returns.
Über diesen Sound
This is a six-second voice clip built around a confused mention of wallets and the puzzled question of what is in the box anyhow. It feels bewildered and lightly funny, landing like someone has just opened something unexpected and cannot make sense of what they found inside it at all.