Funny Dirty Joke

jim a 85 year old man goes to his doctor. he tells the doctor that he cant get his junk hard. and so the doctor getting annoyed tells jim that he became too old.
after listening to this jim says the doctor that he has a girlfreind who is just 18 years old and is pregnant.
after hearing this the docotor tells him "let me tell you a story jim, one day a man was leaving for hunting and was in a hurry. so instead of picking his gun up he picked his umbrella and went for hunting. after eaching the jungle suddenly a big bear comes in front of him and he takes out his umbrella and shoots and guess what ? the bear died!!
jim tells " what stupidity doctor! obviously someone else might have shot the bear!!
doctor - "EXACTLY NIGGA"