Heads Are Tough - Doctors Jokes. Heads Are Tough - Doctors Jokes. Clean Christian jokes, funny jokes, free jokes, and clean jokes and humor about doctors, dentists, medicine, death, and more. Enjoy a wide variety of funny Christian jokes, good clean jokes, and family safe jokes and religious humor. Joe and Jim were out cutting wood, and Jim cut his arm off. Joe wrapped the arm in a plastic bag and took Jim to a surgeon. The surgeon said "You're in luck! I'm an expert at reattaching limbs! Come back in 5 hours." So Joe