Place this clip immediately after the reveal or flop in your edit, then follow it with the vine boom sound for a heavier punctuation. For a lighter sequence, lead in with the dun dun dun sound so the laugh becomes the payoff rather than the setup for the scene.
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This is a roughly fourteen-second clip of a single voice laughing in a drawn-out 'ka-ha-ha' pattern, repeating and stretching the cackle well past a normal chuckle. It gives off a mocking, triumphant feeling, like someone gleefully laughing at their own win or at another person's flop, which makes the exaggeration itself the joke.