Put this clip as the reaction beat right after the reveal in your edit, lead into it with the dun dun dun sound to build the reveal, then close the sequence with a vine boom sound button hit for the final punctuation mark.
À propos de ce son
One human voice holds a loud ahh for about ten seconds, stretching the sound out as ahhhhhhhh aaaaaahhh without forming words. It feels frantic and funny at the same time, the kind of over-the-top panic that turns a small scare, slip or bad moment into a joke for everyone listening nearby in the room.