No ID, No Idea, Part 4

(A customer comes to the bar with his parents. He starts to order drinks, but I stop him to ask for his ID.)

Me: “Can I see some ID, please?”

Customer’s mother: “He doesn’t need it. He’s 19.”

Me: “Well, I’m just asking him to prove that.”

Customer: “I don’t have any.”

Me: “I’m sorry, but I won’t be able to serve you then.”

Customer’s father: “Okay. Well, I’ll order then.”

(He orders the same three alcoholic drinks as his son had before.)

Me: “Unfortunately, he will have to have a soft drink.”

Customer’s father: “What do you mean he can’t have a drink? He’s 19! He’s actually a barman, you know!”

Me: “Well, he should really know better then.”