9. Burning Man freak
Burning Man, the annual arts festival in the Nevada desert, has gained notoriety as a temporary hotbed of escapism and chemically induced excess for hordes of Silicon Valley types who are usually all about business. Now more than two decades old, the once-underground event is mainstream enough so that you could dress up as a crazed Burning Man devotee for Halloween and have some well-informed people actually get the theme.
Essentially, with this costume you can do whatever you want as long as it involves wacky face paint, bizarre hairstyles, and preferably as little clothing as possible. Carry something like a bongo drum, a torch, or a live rabbit. If you really want to be accurate, fake a sunburn too. (Don't get a real one. That's bad for you.) Read lots of Boing Boing in preparation.
For the record, CNET News.com does not advocate public nudity, even if you're in really good shape.
Photo by Declan McCullagh/CNET News.com
