Books that don't resolve themselves, especially books that are really plugs for a computer game
Words being used incorrectly, especially in a professional setting -- publications or teachers
The Same Damn Noise/phrase/song over and over and over
Opinion being presented as fact
Preppies
Flagrant disrespect for good teachers
Bad grammar and bad spelling -- Tommy escapes because he tries to improve so damn hard!
Bigots. Racists. Snobs.
Getting interrupted.