Guy: Doctor, my girlfriend is pregnant

Guy: Doctor, my girlfriend is pregnant but we always use protection and the condom has never broken. How is this possible?

Doctor: let me tell you a story. There was once a hunter who always carried a gun wherever he went. One day he took out his umbrella instead of his gun and went out. A lion suddenly jumped in front of him. In order to scare the lion the hunter used the umbrella like a gun and shot the lion, then it died.

Guy: Nonsense!! Someone else must have shot the lion

Doctor: Good, you understand the story. Next patient please…