What's the deal with your nickname? How did you get it? If your nickname is self-explanatory, then tell everyone when you first started using the internet, and what was the first thing that made you say "wow, this isn't just a place for freaks after all?" Was it a website? Was it an email from a long-lost friend? Go on, spill it.
Sourwookie is a shortened name of a shortened name. One night, while brainstorming terrible band names with friends, we spewed up Sweet Chewbacca and the Sour Wookies. It was then reduced to Sweet and Sour Wookie, then simply Sourwookie.