Place it at the peak of a funny moment, after the setup and before the reaction shot, then follow it with a baby laughing meme for a second wave of laughter, or a cat laugh meme when the joke turns absurd.
About this sound
This is a just-over-a-second clip of streamer Scorac laughing hard, his voice breaking into loud, uncontrolled laughter that fills the whole moment. It feels infectious and chaotic, like catching someone mid-laugh when they cannot stop, and it works as an instant burst of pure amusement. The sound comes from Scorac laughing on one of his streams.