*Guy* : Doctor, my girlfriend is pregnant but we always use protection..
*Doctor* : Let me tell you a story..... "There was once a hunter, who always carry a gun when he goes hunting. One day, he accidentally took an umbrella instead of his gun.. While walking, a lion suddenly jump in front of him.. In order to scare the lion, the hunter uses his umbrella like a gun and shoot the lion, and the lion died..".