To be a roadie, you've got to have something that separates you from the Fred that dresses like the Discovery team just to ride on a bike path, but sets you apart from those that like to go out for long road rides at slower paces just for the sheer pleasure of it (ie, tourists). You have to look like you're trying to hide the fact you're in great pain from all your effort. It's a delicate balance.
Most "roadies" I know like to ride in a pack and try to look like the TDF peloton. They also tend to favor a faster pace. It helps if you're competition minded. A good roadie never..I repeat NEVER...acknowledges another cyclist on the road. It's bad form to admit you may be human after all and not totally wrapped up in your training.