A 90 year old man goes to his doctor for a rutine check up.

- Doctor, I've never felt so good in my entire life. I have a new bride who is only 18 years old and we are expecting a baby. What do you think about this, asks the old man?

The doctor thinks for a minute and replies:

-I have a very good friend, an elderly gentleman, who likes hunting and never misses a hunting season. One time, was rushing and instead of getting the gun he grubbed his umbrella. He gets in the woods, he sees a rabbit, he shoots and the rabbit fell to the ground dead. What do you think about this, asks the doctor?

- I think that somebody else shot that rabbit, replies the 90 years old man.

The doctor answers:

-Exactly!