Place it straight after the familiar trick is revealed, as the reaction that closes the setup. Follow it with the Bruh Sound Effect when the other person doubles down, or cut to the Emotional Damage Meme Sound when the failed trick backfires on its maker.
About this sound
This 11-second clip has a Russian man calmly saying 'Ya v eti igry uzhe igral,' meaning 'I've played these games before.' His steady, knowing delivery makes the listener feel the dry amusement of spotting a trick at once, unimpressed rather than angry. It spread as a Russian reaction meme for edits where someone recognises a familiar setup and refuses to be fooled again.