(A customer comes up to the cash register holding her bill in one hand and a half-full glass of soda in the other. She sets the bill on the counter and hands me the glass.)

Me: “I’m sorry, Ma’am. Did your waitress forget to bring you a to-go cup?”

Customer: “Oh, no, I’m all finished, thanks.”

Me: “Okay. I’ll just take this back to the dish-room to have it washed.”

Customer: “Actually, could you just empty it and bring it back up here?”

Me: “You mean empty it into a to-go cup?”

Customer: “No, just dump the soda out and bring me the empty glass.”

Me: “What are you going to do with an empty glass?”

Customer: “Shove it in my purse and haul my a** out of here!”