(A guy walks up to the register carrying his two or three year old son and places him on the counter.)

Me: “Do you have a rewards card with us?”

Guy: “No, and I don’t want one either. No!”

(The little boy grabs the stylus from the PIN pad and starts trying to draw.)

Little boy: “No! No! No! No!”

Me: *jokingly* “See, look what you taught him.”

(The guy tries to take the stylus from his son.)

Guy: “Give me the d*** pen!”

Little boy: “Give me the d*** pen! Give me the d*** pen!”