Place it as the payoff at the end of a slow build-up, right when the reveal appears, then follow it with Galaxy Brain to stretch the sequence further. For a bigger punch, put a Vine Boom after the pair to close the moment with impact.
About this sound
This four-second clip is one voice drawing out the word wow in a squeaky, high register. It feels theatrically over the top, turning a small surprise into a huge, funny reaction that catches listeners off guard. It first appeared in the 1990 Japanese arcade game Parodius Da!, spoken when a boss was defeated, and later became familiar through Japanese television and anime.