Place it right after the panicked reaction peaks in your edit, so it acts as the payoff to the scare. Open with It Was At This Moment He Knew to set up the false alarm, then follow the reassurance with Bruh Meme when the joke lands and nobody is actually in danger.
About this sound
This short spoken clip lasts about four seconds and delivers the line 'Relax, it's just an iron golem' in a calm, steady voice, as if someone is talking a panicking friend down. It feels reassuring and lightly funny, turning a tense moment into a joke about overreacting. The line refers to the iron golem, the tall, protective mob from Minecraft.