Place it at the end of a build-up, after a dramatic dun dun dun cue, so it lands on the reveal itself. Follow the laugh with a vine boom on the cut to black to sharpen the scare, and save a second scare sound for a later beat rather than stacking them together.
このサウンドについて
This is a short 2.3-second clip of a loud, exaggerated hahaha laugh that builds and carries a slight echo, as if it is coming from just off screen. It feels unsettling rather than funny, turning a grin or reveal into something threatening. The distorted, theatrical delivery makes listeners brace for a scare, giving an ordinary moment a sudden sinister edge.