(I’m working in the drive-thru, and am taking customer’s orders and their money. His daughter is sitting in the passenger’s seat.)

Me: “So, that’ll be $28.10. Thanks!”

(The customer hands me $50.10.)

Customer: “So, how much change do I get?”

Me: “$22.”

Customer: “You cheated! That was an easy one! Sorry, I’m a maths teacher.”

Me: *laughs* “Oh, that’s alright. But it’s the school holidays!”

Customer: “Maths doesn’t take holidays!”

Me: “You’re right. Well, enjoy the rest of your holidays!”

Customer’s Daughter: *looks very embarrassed* “Sorry, he does this everywhere we go!”