Place it at the reveal in a lookalike edit, after the side-by-side comparison and before the reaction shot, so it closes the gag. Pair it with Woody Woodpecker Laugh for a second comic beat, or follow it with Bajaj Bajuri Laugh when the joke needs a different comic voice.
About this sound
This short clip is a burst of loud, hearty laughter lasting just over three seconds, with a rolling hahaha that sounds like someone caught mid-joke and unable to stop. It feels playful and teasing, the kind of laugh that turns a resemblance or a silly comparison into the whole punchline. It comes from Chaves, the classic Latin American television comedy.