Place this clip right after the reveal in your edit, preceded by a dun dun dun sound to build the setup. Follow it with a spongebob fail moment only for a failed prank version, otherwise end the scene there so the reaction stays the focus.
关于此声音
This clip is a short burst of several high-pitched witch cackles layered together, lasting about two seconds. It feels mischievously spooky and over the top, turning an ordinary moment into a cartoonishly evil laugh that listeners instantly read as playful, theatrical and a little unsettling.