Giggles
Gnats
Racistnames
Stillers
Whiners
Patsys
Bills
Lambs
I'm pretty neutral on the rest. Sorry Packers and Cards fans, your team hasn't done enough to earn my wrath. As a matter of fact, I have respect for the Cards for being the oldest franchise in the NFL, and the Packers for their traditions. The hate just isn't there, yet. Dolphins used to annoy, but are now meh.
Teams I'll cheer for here and there:
Raiders: My father's side of the family are Cowboy's fans, and that's who I grew up liking. My mother's side are all Raiders fan's. So they would try to get me to like them too. As a bonus, they hate the Whiners as well.
Browns: Oh come on, how can anyone not cheer for the Factory of Sadness once in a while. They are just so Brownsy. This is the dawning of the Manziel era! lulz.
Edit: I've only been to 2 NFL games. The first was in L.A. and was Browns vs. Raiders. The Browns won that one. It was a good game. The second was in Oakland and was Raiders vs. Vikings. I believe the Raiders won that. The game wasn't impressive, but the stupidity going on by the fans and how they were picking on the Vikings fans sure was. I didn't see that same behavior in L.A. against the Browns fans in the stands.