One time while sparring with Wolverine, Chuck Norris accidentally lost his left testicle. You might be familiar with it to this very day by its technical term: Jupiter. Full text

Contrary to popular belief, Chuck Norris, not the box jellyfish of northern Australia, is the most venomous creature on earth. Within 3 minutes of being bitten, a human being experiences the following symptoms: fever, blurred vision, beard rash, tightness of the jeans, and the feeling of being repeatedly kicked through a car windshield. Full text