Chuck Norris became Grand ChessMaster when he defeated his opponents only by using one piece (his leg) and on his first move (the roundhouse kick). He never lost.
Peter Parker was bitten by a radioactive spider and became Spider-Man. Clark Kent was bitten by Chuck Norris and became Superman.
So every time Clark Kent wants to become Superman, he just go to the phone booth and beg Chuck Norris to bite him.