Put this clip just before the visual payoff in a horror edit, then follow it with the FNAF Jumpscare Scream for the actual scare. For a build-up sequence, start with the Danger Alarm Meme Sound, add this laugh, and end on the scream.
關於此聲音
This clip is a human laugh stretched by heavy reverb over about five seconds, credited in the file as Laughter by Steve Henifin. The echo makes it linger in a hollow, unnatural way, giving listeners a tense and unsettling feeling like something threatening is nearby but unseen. It is a general horror effect, not a line tied to a specific character.