Place it just after a villain reveal or a failed escape, then follow it with the FNAF Jumpscare Scream for the payoff. Keep it as the centre of the scene, with quieter reactions before it and the scare sound after it.
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This 14-second clip is a Russian laugh linked to Springtrap, presented as one long stretch of laughter rather than a quick chuckle. It feels darkly funny, with a teasing, menacing edge that makes the joke land as a threat as much as a punchline, and it suits moments where the laughter itself is the reaction.