You're probably a fan of a pro sports team. Maybe you're a fanatic. Maybe, truth be told, your team is more important to you than your mother.
Maybe nothing in life gives you greater joy and pain than your team. Maybe you've attached your very self-worth to your team's performance. When it wins, you brag to friends and coworkers as if you're superior because you chose to be a fan of this great team. When it loses, you want to go into hiding.