One day a man came to a hospital. "What’s the matter with you" asked the doctor. "I have a headache every morning when I get up," said the man. The doctor looked over him carefully. "Well, nothing serious now," he said. "But you must stop doing headwork for a week or so. "But doctor, "replied the man. "It’s impossible, because it is my living." "Oh, what a pity," said the doctor. "Are you a writer, then" "Oh, no, said the man." I am a barber.\ The man had a headache every evening.