Kid: Mom, what’s dark humor?
Mom: Do you see that man without arms over there? Tell him to clap.
Kid: But, Mom, I’m blind!
Mom: Exactly.
Kid: Mom, what’s dark humor?
Mom: Do you see that man without arms over there? Tell him to clap.
Kid: But, Mom, I’m blind!
Mom: Exactly.
Listen up, genius. You clearly don't get it, so let me spell it out. The kid asks about dark humor, right? The mom then makes a joke that combines disability with irony. She tells the blind kid to ask the armless man to clap, pointing out the absurdity and impossibility of both situations. It's dark because it uses disability for humor, which ain't cool but kinda funny, you get me?