I live in Twins and Vikings territory. I tell people my favorite 2 baseball teams are the Yankees and whoever id playing the Twins. Same with football. My favorite 2 teams are the Cowboys and whoever is playing the Vikings.
Been a fan of the Yankees since Wade Boggs played there. I defected from the Red Sox but could not bring myself to become a Devil Rays fan. I have always been a Cowboys fan.
Use the second favorite team term to annoy my friends.