Even if the many-worlds explanation was utilized for the creation of said joke, not even Chuck Norris can write an original and intelligent joke about himself and science.
That being said, the first one was pretty good (but I'm no nuclear chemist). So was this one
Quote (bentherdonethat @ Dec 6 2010 02:01am)
If you measure that Chuck Norris's foot is exactly in front of your face, Heisenberg will tell you precisely what the foot's momentum is, and Schrodinger will observe Chuck Norris collapsing your head's wave function.
I seriously lol'd.