Put it right after the moment of confusion in your edit, then follow it with the Bruh sound for a second reaction before cutting to the next scene, or pair it before the Emotional Damage sound when the joke needs a bigger payoff.
關於此聲音
This is a very short spoken Russian phrase, lasting about 1.2 seconds, delivered as a direct, teasing question to someone who seems lost or out of place. It sounds blunt and playful, with a mocking edge that makes the listener feel caught out rather than insulted. The line works because it is abrupt, unexpected and instantly recognisable to Russian-speaking meme fans.