Three Flags by Jasper Johns

I think that if you live in America you might have already seen a reproduction of the "Three Flags", 1958, by Jasper Johns or any of his other works with the American flag.
If you did see it you now it is time for the question: "what does it means?"; "what does he want to say with this?" and surely other things are coming to your mind.
Sad news: I have a fever today and my body is aching all over. Please, search at Google. You can start at this site here.
Wish me luck. It is aching... reasoning disappears and we only want to get better.
Leave me a comment telling what did you find about Jasper Johns. :) You can teach how to fish or... I don't remember the saying.. bed.. bed..