Place it right after the outfit reveal, then follow with Emotional Damage to sell the mock scandal, or cut to Bruh for another deadpan reaction before the next clip in the edit.
Über diesen Sound
A Russian speaker asks who gave permission to wear underwear, in one blunt three-second outburst with no music behind it. The question feels both ridiculous and oddly stern, because an everyday wardrobe choice is treated like a serious breach of the rules. That clash between the trivial subject and the stern delivery is what makes listeners laugh.