Put it at the reveal in a prank edit, right after the target reacts and before the replay. Follow it with Nelson's Ha-Ha! for a longer mocking beat, or precede it with the Laughing Dog Meme to build a small chorus of laughers before the cut.
關於此聲音
This is a very short burst of repeated hehehe laughter, about one second of a playful human giggle strung together without words. It lands as cheeky and mischievous rather than hearty, the sound of someone amused by their own trick, caught mid snicker and clearly enjoying a small, silly win over everyone else in on it.