A ninety-year old geezer and a young wife

After marrying a young filly, a ninety-year old geezer told his doctor that they were expecting a baby.
"Let me tell you a story," said the doctor. "An absent-minded fellow went hunting, but instead of a gun, he picked up an umbrella. Suddenly, a bear charged him. Pointing his umbrella at the bear, he shot and killed it on the spot."
"Impossible!" the geezer exclaimed. Somebody else must have shot that bear!"
"Exactly," replied the doctor!