1.
People who only watch the movies and call themselves a fan of the series. One series is worse than any other (cough Percy motherfucking Jackson cough)

2.
People who like, oh, I don't know, TWILIGHT!!!! And not even bothering to glance at some other series like, possibly, (Pride and Joy) Harry Potter!! Yet totally trashing it without even bothering to learn how many movies there are, while still saying that there are, "more Twilight movies than HP because people like them more," or, "had more faith in the (motherfucking)franchise" THERE ARE MORE FUCKING HARRY POTTER BOOKS, AND MOVIES THAN TWILIGHT!!!!!!!
(Srry, that one really pisses me off)

3.
Any form of trashing nerds, geeks, dork, or un-jock-like kids or anything they support. Just because we don't like kicking a ball around doesn't mean you're better than us! It usually just means we have a brighter future than your trophy-wife-asses.
(Again, sorry, passionate subject)