Place it at the climax of a victory or dance edit, just as the dancer is revealed, then follow it with Bruh for a deadpan reaction to the celebration. For another cut, open with Goofy Ahh Sounds before the dance so the reveal still lands as the payoff.
Über diesen Sound
This is a short, roughly seven-and-a-half-second clip built around Thanos dancing, with a bouncy, upbeat feel that turns the normally menacing villain into an unlikely party figure. It lands as playful and absurd, the humour coming from seeing such a powerful character move to a light dance rhythm instead of threatening anyone.