Pull those up!!

What's the deal with saggy pants that go no higher than peoples (usually teen boys) knees? Is it some sort of ritual or something? It's especially bad when they have a belt around their pants but they're pants still can't stay up!!

Is the belt for decoration only or something? Because I can't see that it is really doing ANYONE any good! Please help me understand this.....

Isn't it hard to walk like that?? What are other people thinking about you when they see you waddling down the sidewalk like a drunk penguin with your pants down at your knees? I don't get it. There's something wrong with society today if THAT has become the style.