Put this laugh at the reveal beat, then follow it immediately with a FNAF jumpscare scream for the payoff. For a longer build, place a danger alarm meme sound underneath the dialogue before it, so the laugh lands as the moment the threat becomes real.
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This is a short burst of high-pitched, mocking laughter from Flowey, lasting just under three seconds and delivered in quick, taunting chuckles. It feels gleefully sinister and deliberately unsettling rather than playful, turning a cute tone into a threat. The clip comes from Undertale, the 2015 indie role-playing game by Toby Fox.