"Fan" is derived from "fanatic" and maybe these guys serve as a good illustration. what else would make you paint yourselves like this?
This is another photo from the 2008 WHS homecoming ritual. The interesting thing about these guys is that when they got to the football stadium, they were barred from the event because a new South Dakota High School Activities Association rule requires all spectators to wear shirts at state-sponsored events. To circumvent the rule, they put on white t-shirts that were cut in such a way that allowed the letters to show through - a true loophole. Check out the shirts here (click).