These are one of the funniest kind of jokes because the Medical profession is otherwise a serious profession.
A fellow went for a check up to his family physician. After a thorough examination, the doctor gave the man the bad news — "I'm sorry, but you only have 6 months to live." Obviously the man was shocked. He replied, "Please Doc, give me some advice!" "Well," the doctor said, "here is what I would do. First off, I would move to Arkansas. Then I would buy a hog farm. Finally, I would marry a 350 lb. woman." Looking perplexed, the man replied "my God, doc, how in the world will that help?" The doctor answered, "Well, I don't know how much it will help your illness, but it will be the longest 6 months of your life!"