You really have friends that are 9er fans, I don't. The first time my brother-in-law showed up at my house he was wearing a 49ers cap, I insisted that he take it off and leave in his car or he was not coming inside. I let him know that this is Ram country. He was one of those bandwagon fans and the way I could tell was when I asked him the name of their starting center. This is the question that always exposes bandwagon fans
I've lived in three places in my life: 49ers country, Raiders country, and Seahawks country. Unfortunately, I've had to adapt to being surrounded by the enemy. I've had to be the guy who shows up to work on "wear your 49ers or Raiders jersey day, wearing my Rams gear." On a positive note, I appreciate the fact that my friends actually accept me and my Marshall Faulk jersey in their homes, even on game days.
I've shared this before, but Seahawks fans are the worst, even worse than 49er fans. I used to kill them with my bandwagon test, it's a bit old now, but I used to get a kick out of asking them if they thought Curt Warner was one of the greatest Seahawks ever. 90% of them insisted that he only played for the Rams and Cardinals.