Place it right after the unbelievable line as the first reaction beat, then follow it with a second questioning response to stretch the exchange before the reveal. Pair it with the Ceeday Huh sound for a double take, or with Oh My God Wow when the claim gets even wilder.
About this sound
This short clip is a young voice asking 'Say what, kid?' in a sharp, disbelieving tone, as if stopping a conversation mid-sentence to question what was just said. It feels funny and awkward at once, turning confusion into a quick comeback that lands because it sounds genuinely caught off guard.