An 89-year-old man goes to the urologist:
- Doctor, he says, I need a vasectomy.
- A vasectomy? Why the hell would you need a vasectomy at your age?
- Well, doctor, I just married a beautiful woman of 22 years, and last night she told me that she is pregnant! I can't have more children at my age!
The doctor thought for a second and said:
- Let me tell you a story. A man went for a walk in the forest and saw a huge bear. The bear began to pounce on him. He must have thought it was lost, but at the last moment he crossed his fingers and the bear fell dead from a head shot.
The old man looked at the doctor in disbelief:
- Impossible! Someone else must have shot that bear!
- Exactly, said the doctor.