I have had several students who are 49ers fans and I have heard them say things back and forth with Cardinals fans. It seems like the Cardinals fans are always trying to prove the worth of the Cardinals to 49ers fans, but many of us take an arrogant approach in response.
Seahawks fans are awful. It's crazy how many live in the valley. Former Seattle receiver DJ Hackett lives in the area and he seems pretty cool. After football, he went to work in the vending machine business. I see him a couple of mornings a week when he comes to the school to stock the machine.