This can be anything-not just college. For instance, at my school (Stanford), California is our traditional rival, and as much as I LOVE it when we beat them, I love to hate other schools as well. Like U$C!!! I LOVE it when they lose, because I hate that Damn horse and Tommy Trojan and "Fight On" !!! The only thing I like about U$C is the song girls!!!

They are ALWAYS FINE!!! I can deal with losing to UCLA or Washington or whatever, but when we lose to either Cal or U$C, I am seriously mad!
College Basketball-HATE Arizona and Lute Olsen-Big rivals!!!
Pro Baseball-Love the Giants, HATE the Dodgers!!! But I also HATE the Yankees and their overpriced payroll as well...
Pro football-Always a Niners fan. Will always HATE the Rams (L.A., St. Louis-doesn't matter). But I HATE the Cowboys (America's team my A**).
My two favorite teams, Stanford and whomever is playing against USC!!!