(A customer arrives to pick up the meal he ordered over the phone.)

Me: “So you would like to add to chocolate shakes to your phone in order?”

Customer: “Yes, please.”

(I crack out calculator to add the two orders and sales tax.)

Customer: “Typical! Teenagers can’t solve any problems without a calculator.”

Me: “Okay then, what’s your total?”

Customer: “I don’t know. Let me see the calculator.”