His doctor says, "You're looking good, how do you feel?"
The old man says, "I feel great. I have a 25 year old wife who's carrying my baby. What do you think about that?"
The doctor says, "That reminds me of another patient I have who's about your age. He an avid hunter and never misses a season. This past year he went hunting beavers in Canada but when he got to the woods he realized he had forgotten to pack his rifle. To make the best of things he got his lunch and walking stick and went for a hike. After a while he happened upon a beaver tending to his damn. Just to satisfy himself, he raised his walking stick to his cheek like it was his rifle, took aim and said, "Bang. Bang." Just then two shots rang out and the beaver fell over dead. What do you think about that?
The old man said, "Well logic would dictate that there was somebody else out there that plugged the beaver."
His doctor said, "Exactly my point."