The doctor considers his question for a minute and says, "I have a friend
who is an avid hunter and never misses a season. One day when he was going
out in a bit of a hurry, he accidentally picked up his umbrella rather than
his gun. When he got to the creek, he saw a prime beaver sitting beside the
stream of water. He raised his umbrella and went; "Bang, bang," and the
beaver fell over dead. What do you think of that?"

The 80-year-old said, "I'd say somebody else shot that beaver."