A man coughed violently, and his false teeth shot across the room and smashed against the wall. Oh, dear, he said, whatever shall I do? I cant afford a new set. Dont worry, said his friend. Ill get a pair from my brother for you. The next day the friend came back with the teeth, which fitted perfectly. This is wonderful, said the man. Your brother must be a very good dentist. Oh, hes not a dentist, replied the friend, hes an undertaker.