On the first day of his first job, the boss explained to him that he position was Go-Fer. Then he sent him to the coffee shop for coffee for the staff.
At the coffee shop he handed the server and asked her if it would hold 6 cups of coffee. She looked over and told him she was sure it would. Then he said "I need 6 cups. 2 regular, 2 black, and 2 decaf."