Doctors are used to getting calls at any hour. One night a man phoned, waking me up. "I’m sorry to bother you so late," he said, "but I think my wife has appendicitis."
Still half asleep, I reminded him that I had taken his wife’s inflamed appendix out a couple of years before. "Whoever heard of a second appendix?" I asked.
"You may not have heard of a second appendix," he replied, "but surely you’ve heard of a second wife."