A 90-year old man said to his doctor, "I've never felt better . . .
I have an 18-year old bride who is pregnant with my child. What
do you think of that?"

The doctor replied, "I have a friend who is a hunter and never
misses a season. One day he was in a hurry and picked up his
umbrella by mistake. When he got to the creek, he saw a beaver.
He raised his umbrella, went 'bang, bang, bang', and the beaver
fell dead. What do you think of that?"

The 90-year old said, "I'd say somebody else shot the beaver."

The doctor said, "My point exactly."