People who are melodramatic attention whores. The types who feel the need to tell you just how great or how dark and messed up they are, or the people who attempt to inject drama into things. I dislike it when people take themselves too seriously or look down at you for not taking yourself seriously. I also dislike it when people can't be serious when the situation calls for it. I dislike it when people are just difficult. The type of person who you can't win with no matter what you say. I dislike it when people are condescending and idiotic. I can't honestly think of anyone I know who is condescending and not stupid in some way, as often times they're condescending about something they also happen to be wrong about. It's particularly frustrating because it would be so gratifying to just unload on people who do that, but I usually opt for the more civil option for the sake of keeping the peace. I dislike it when people lack humility. I dislike it when people think too highly of themselves. Finally I dislike it when people who aren't even willing to put an effort in to get along with people or be considerate of others. Despite all of that, I get along with most people, as usually their entire personality is defined by a single trait or behavior that bothers me (USUALLY).