He Wants Coffee As Dense As He Is

Me: “Here is your coffee, sir.”

Customer: “Oh, could you add more milk to that?”

Me: “Sure.”

(Since the coffee cup is already full, I walk over to the sink to pour a little out before adding more milk.)

Customer: “Stop that! I didn’t say to pour any out!”

Me: “Sir, the cup was full. In order to add more milk, I have to pour a little coffee out.”

Customer: “You should obey what your customers tell you!”

Me: “I’m sorry, but sometimes I have to obey the laws of physics instead.”