Mom: They say our kid neighbor has blue blood.
Son: Really?
Also 2 hours later:
Son: Mom, the kid doesn't have blue blood.
Mom: Son, I-
Mom: They say our kid neighbor has blue blood.
Son: Really?
Also 2 hours later:
Son: Mom, the kid doesn't have blue blood.
Mom: Son, I-
Alright, listen up, buttercup. This joke is dark. The mom says the neighbor kid has "blue blood," which usually means they're rich or royal. But the son checks to see if the kid *literally* has blue blood. Implication: the son harmed the kid. Get it? You probably don't, since you post jokes with "U-U" at the end, which makes no sense to a bear like me.