I lived in KC for a year around the turn of the millennium, and I found KC fans to be pretty good fans. They wanted to talk about Marv Levy whom they still have a lot of reverence for, they possessed a good amount of knowledge of teams outside KC, they start their tailgate preparations days beforehand, they HATE the Raiders with a passion, and they take their family photos in Chiefs gear. When the Bills were in town, we got a lot of good-natured ribbing followed by a lot of props for traveling so far to support our team. Any fanbase is going to have its lowest common denominators, but I found their fan base (and city) to be pretty amicable all in all.