[SubaSteevo]

Not a stand-up joke, but still funny

An 80 year old man is visiting his doctor when he mentions that his 20 year old wife is pregnant.
The doctor responds, "Let me tell you a story about a man who went hunting. The man had bad vision and he grabbed his umbrella instead of his gun as he left the house. Sure enough he finds a bear, aims the umbrella, and "fires." The bear drops dead."
"But that's impossible," says the old man, "someone else must have shot the bear."
"Exactly," says the doctor.