Place this clip right at the reveal moment in your edit, after your setup shot and before the reaction cut. Follow it with the Hell Naw Dog button for a second rejection beat, then end on a plain reaction face without any extra sound.
Über diesen Sound
This is a six-second Russian voice clip of someone exclaiming the profane rhetorical question 'what the fuck Rubik's cube' in disbelief. It feels baffled and exasperated, like an over-the-top reaction to something completely random, and that outsized confusion is what makes it funny as a meme response.