Place it right after the confusing moment in your edit, then follow it with Bruh as the next reaction, and save Emotional Damage for the later moment when the joke turns against the speaker.
Über diesen Sound
This short clip, about two seconds long, has a gruff Pillager voice delivering the deadpan line 'erm what the sigma' in a slow, puzzled tone. It lands as awkward, confused amusement, the sound of someone caught off guard by something strange. The voice belongs to the Minecraft Pillager, giving the familiar meme phrase a blunt, in-game delivery.