Place it at the very end of a short edit as the final reaction beat, after the main gag has played out. Follow it with a baby laughing meme for a longer laugh, or precede it with goofy ahh sounds to build a chain of cartoonish reactions before the payoff.
About this sound
This clip is a very short burst of exaggerated human laughter, lasting under a second and delivered in a high, goofy tone that cuts off almost as soon as it starts. It feels silly and contagious, the kind of laugh that makes a dumb moment seem even funnier and turns an awkward pause into a shared joke between listeners.