He's an American martial artist and movie star. Several years ago jokes started circulating about how tough he is: http://www.chucknorrisfacts.com/chuck-norris-top-50-facts I always thought the jokes were goofy, since the first time I ever saw him was in Bruce Lee's, "The Way of the Dragon". In it, he plays a bad guy who gets his ass handed to him by the Bruceman.
I saw him most recently in Expendables 2...... They worked the cobra joke in there and it was the most amazing thing ever......
Well, I think since Chuck Norris shaved his beard and as a result everything has been ruined, it may well be an implied quitting thread.