Place it immediately after the confusing reveal, then follow it with Vine Boom to mark the reveal and SpongeBob Fail to close the joke, keeping the reaction sequence short and focused on the twist itself.
このサウンドについて
This is a short spoken exclamation stretching out the words 'what the hell' into a single incredulous burst lasting about a second. The voice sounds caught off guard, half laughing and half annoyed, giving the clip a sharp, confused energy that lands instantly. It works as a reaction to something absurd, unexpected or completely nonsensical.