Green Bay Packers: Grew up in the 70's where everyone I knew was either a Cowboys, Dolphins, or Steelers fan. I chose the Cowboys till one day my sister started cheering for the Cowboys. I instantly decided to cheer for the team they were playing against that day. It was the Packers stuck with them to this day.
Milwaukee Brewers: In 1982 everyone my class voted on who everyone was cheering for in the World Series. Everyone voted for the Cardinals, so I chose the Brewers, then realized Milwaukee was near Green Bay, it stuck. Named my third child Brewer.
Tennessee Titans: When the Oilers moved to Tennessee I decided to cheer for my hometown team. I still like the Packers but the Titans are my team now.
Cardiff City FC: I started enjoying soccer after the last Olympics. I took a year and sorted through the various leagues. Settled on Cardiff because I have Welsh ancestry. They won promotion the year after I started following them.
Vanderbilt: Inherited from my dad, why could'nt my dad have cheered for a better team?
Nashville Predators: Home team
Milwaukee Bucks: Just made sense since I liked the Brewers and Packers.