Chuck Norris facts are jokes about Chuck Norris, an actor who is famous for playing tough guys in action movies. Chuck Norris has become enormously popular and is often depicted as being an almost superhumanly strong person. The jokes that people tell about him often involve him being so strong and impressive that he is capable of things that seem impossible or unbelievable. For example, one Chuck Norris joke is that "Chuck Norris can divide by zero." This is a joke because dividing by zero is impossible in math.