Place it immediately after the unbelievable line in your edit, then follow it with the You What SpongeBob sound for a second challenge before the reply. Keep this clip as the opening question and let the paired sound raise the stakes, so the exchange builds instead of repeating the same beat.
About this sound
This is a short 1.8-second spoken line from The Boondocks, delivered as a sharp, disbelieving challenge after something unexpected is said. It feels confrontational and funny at once, turning a simple request to repeat words into a dare. The clipped delivery makes the disbelief land instantly, giving listeners a quick jolt of attitude from the animated series.