A teenager got a job in a supermarket, and one day a man came in and wanted to buy half a grapefruit. “I don’t think we can sell half a grapefruit,” said the kid, “but I’ll ask my boss.” He walked over to the boss and said, “Some idiot wants to buy half a grapefruit,” then noticed that the man had followed him over and heard the comment. “And this fine gentleman,“ he added, “would like to buy the other half.”