(A dad and his children are in my checkout line. I’m ringing up items for the family when I hear his children talking to each other.)

8-year old son: “Want to hear a joke?

5-year old son: “Yeah!”

8-year old son: “Knock knock.”

5-year old son: “Who’s there?”

8-year old son: “Merry!”

5-year old son: “Merry who?”

8-year old son: “Merry, it’s almost Christmas!”

(I laugh.)

Dad: *looking at me and laughing too* “Yeah, I was wondering where he was going with that.”