Apparently, the first and second rules of Fight Club have been broken. Videotaping knock-down drag-out fist fights between pals and posting them on the internet is the latest fad since the Macarena. Kids’ afterschool activities now include bruising along with brewskis, and teachers don’t automatically suspect parents when kids turn up in class with black eyes and broken noses. And it’s not just the boys who throw punches; the girls have mean right hooks too.