The best things in life are often wonderfully simple. Take, for example, toast. Very simple, extremely nice.
Chuck Norris facts is very simple. It's a list of facts about Chuck Norris, all serving to reinforce the idea of just how dangerous, deadly and martial-arty this man is.
And it made me giggle.
If you're not sure who Chuck Norris is, may I suggest going to watch The Ultimate Showdown of Ultimate Destiny to get an idea?