Place this clip at the reveal point in your edit, just after a shocked sound for the setup and before a goofy yell to close the sequence, keeping this scream as the peak moment between them.
About this sound
This clip is a single drawn-out human scream lasting just over five seconds, voiced as a long aaaaaah tied to Hip Hop Harry. It feels loud, startled and deliberately over the top, turning a small surprise into big, funny panic that listeners instantly read as shock.