"Let me tell you a story," said the doctor.

"There was an absent-minded fellow who went hunting one day, and instead of taking a gun, brought his umbrella.

Before he realized his error, a bear charged him.

He aimed his umbrella at the bear, shot and killed him on the spot."

"That`s impossible!", the geezer exclaimed. "Somebody else must have shot that bear!"

"Exactly!", replied the doctor.