It's easy to tell when other people are bad fans: they're annoying and you don't want to hang around them.
But what if you're a bad fan, and you were so busy being awful that you didn't even notice?
Maybe it's not your fault. Maybe you're easily distracted. Maybe you forgot to eat dinner before guzzling stadium beers. Maybe you're just insufferable in every facet of your life, but no one's bothered to tell you yet.
We're here to help diagnose you.
Read the slideshow to find out if you're a terrible sports fan.