Just Invented The World’s Worst Cocktail

(I am working the breakfast shift and I serve a gentleman a mug of tea.)

Customer: “How much is it for a full cup of tea? This is half empty!”

Me: “Sorry, sir, I have only left a little room at the top for you to pour your milk in.”

Customer: “This is ridiculous. You wouldn’t serve me a pint of beer like that, would you?”

Me: “No, because you wouldn’t be putting milk in your beer, sir.”