The Web 2.0 shirt has a list of all the popular social networking sites. You use a permanent marker to check off all the sites you belong to. Then you're supposed to wear it out and let everyone know just how geeky you really are. So what if your friend list is empty on all the sites, there's no space to write that in anyway. I made a similar shirt for myself that has the one social group I belong to: my biker gang. While we don't really make friends or network, we do stomp heads and ride our hogs drunk. Very similar concepts though.
The whole list after the jump.
Web 2.0 Tee [geeksugar]