Why is Chuck Norris funny?

[PoBoy321]

It seems like everything even remotely related to Chuck Norris is considered hilarious now and I just don't get it. I think it started with the Walker, Texas Ranger lever on Conan which was pretty funny, but now it's just like anything and everything that has to do with Chuck Norris gets people, especially guys in collge, rolling on the floor laughing.

Am I missing something?