I live in the Midwest, so it's unusual to see a Bills fan here. About fifteen years ago, I took an online class. In the initial "meet and greet" thread, the professor said she grew up in the Corning, NY area. Her dad and brothers were all Giants fans, but she adopted the Bills, so I gave her a "Go Bills!"
About five years ago, I was marching in the local Labor Day parade and I saw a guy in the crowd wearing a Bills shirt. I yelled, "Go Bills!" and he gave me a thumbs up.