Back in the day........
When I was a wee drunk, I was working at Calabazas Cyclery. The owner Rob and the semi-owner of Boss Racing, Cecil Jones, used to do cross races on BMX Cruisers, and win in the B Class. And after racing cross myself, there were plenty of mountain bikes, modified road and touring bikes, and what not that would race.
Granted, I haven't raced cross in 10 years, but I imagine the "fuck it and ride" attitude is still there. Even the pro's wore tutu's. Just don't be distracted by the Orange Curtain.
http://www.myspace.com/sjroadrashandteasociety "Americans are broad-minded people. They'll accept the fact that a person can be an alcoholic, a dope fiend, a wife beater, and even a newspaperman, but if a man doesn't drive, there is something wrong with him." ~Art Buchwald