Wear Your Pajamas to School

I was reading this article about U.S. teens who are simply wearing pajamas to school (specifically the bottoms only) in a "new" fashion rave to be comfortable. Does anyone else out there remember, basically, the same thing about...oh...17 years ago (around 1990) when we wore inside out sweatshirts and sweatpants? This seems to me to be the same thing...this is not a NEW rave, just a stolen resurfaced one that, frankly, I still wonder what WE were thinking!