Put it at the end of a short fail sequence, after Sudden Suspense, so it closes the joke instead of opening it. Follow it with Nelson's Ha-Ha! for a second laugh, or swap in Laughing Dog Meme for a different reaction in the same edit.
About this sound
This is a short burst of loud, rolling laughter lasting about 1.8 seconds, with the voice stretching a drawn-out 'fahahahahhhahh' across the clip. It feels gleefully teasing and over the top, like catching someone in a silly mistake and laughing a little too hard. The laugh lands best as a quick, playful jab rather than a warm chuckle.