I usually just end up asking them when is the last time they won a championship. I refuse to say anything else until they tell me. It works.
This will sound dirty, but I'm not a LSU basketball fan. From before I knew anything about basketball I followed UNC basketball (thanks to Jordan).
Plano, Texas, is an amazing melting pot. On my street alone, there are Longhorns, Aggies, Irish, Buckeyes, 15 Chinese families who don't give a shit about football, Razorbacks, Red Raiders, Baylor Bears, and my LSU house. Shit stirrers are around every corner here.
Are we friends? lol because that sounds like me. I even got into baseball. That and as long as it's not against UNC, I'll cheer for LSU basketball. And given a choice I'm going to Baton Rouge over Chapel Hill for my masters/doctorate.
When I first got to Dallas, I was surprised how many OU alums/fans were here. Saw a ton of OU flags in front of houses and OU bumper stickers in north Dallas.