Place it just after the punchline in a short edit, then follow it with an Anime Wow reaction for an exaggerated payoff, letting the second reaction carry the moment further.
このサウンドについて
This is a short snicker lasting about six seconds, a quiet, stifled laugh that sounds like someone trying not to giggle out loud. It feels cheeky and amused, the kind of restrained chuckle that makes a joke land harder because the laughter is barely held back.