Put it near the end of a short edit, just after the reveal, and use it as the payoff for the scene before it. Pair it with It Was At This Moment He Knew before the twist, then close with Fail Sound Meme if the plan collapses.
關於此聲音
This is a brief, roughly three-and-a-half-second laugh by Arthur Fleck, delivered in a strained, theatrical voice that turns from amusement into something uneasy. It feels funny at first, then awkward and unsettling, as if the laughter does not quite fit the moment. The clip comes from Joker (2019), starring Joaquin Phoenix as Arthur Fleck.