Posted to my regular and humor blog.
A boy worked in the produce section of the supermarket. A man came in and asked to buy half a head of lettuce. The boy told him they only sold whole heads of lettuce, but the man was persistent. The boy said he'd go ask his manager what to do.
The boy walked into the back room and said, "There's some jerk out there who wants to buy only half a head of lettuce." As he finished saying this he turned around to find the man standing right behind him, so he added, "And this gentleman wants to buy the other half."
The manager okayed the deal. Later the manager said to the boy, "You almost got yourself in a lot of trouble earlier, but I must say I was impressed with the way you got yourself out of it. You think on your feet, and we like that around here."