Unfinished Business, Charles Sell, Multnomah, 1989, p. 223
A man entered a bar, bought a glass of beer and then immediately threw it into the bartender's face. Quickly grabbing a napkin, he helped the bartender dry his face while he apologized with great remorse. "I'm so sorry," he said. "I have this compulsion to do this. I fight it, but I don't know what to do about it." "You had better do something about your problem," the bartender replied. "You can be sure I'll remember you and will never serve you another drink until you get help."
It was months before the man faced the bartender again. When he asked for a beer, the bartender refused. Then the man explained that he had been seeing a psychiatrist and that his problem was solved. Convinced it was now okay to serve him, the bartender poured him a drink. The man took the glass and splashed the beer into the barkeeper's astonished face. "I thought you were cured," the shocked bartender screamed. "I am," said the man. "I still do it, but I don't feel guilty about it anymore."