Cool your mo-fackin' jets, muchacho, or you'll I'll get very non-PC. Think what you want about the term "rice boy," but remember that you're in the stone age if you think it's a derogatory term for Asians. If you'd keep up with the wild world of automotive enthusiasts, you'd see that it's a term for those who try to make their cars _look_ fast, but don't really concern themselves with actually getting their cars to go fast.

Don't anger the Sandwich Man, or he'll release his awesome powers from within and strike down upon thee with great vengeance and furious anger!