everything really. If I'm eating dinner and someones making noises with their mouth I get infuriated. I get extremely pissed when people double dip. If someone asks me questions trying to pry into my life I get pissed. I never display my anger though.. I always conceal it and bottle it up. If I get really really pissed I just shut my mouth, keep a straight face and breath through my nose, and clench my jaw down. You can't really tell I'm mad. I never show my anger. If someone gets in my face and is talking shit, trying to fight me (which doesn't happen alot), I don't get physical, I just calmly stand my ground, show them I'm not afraid, and counter them with words (not insults) until they back down. This works really well, haven't gotten into a fight since high school cause I've gotten pretty good at this.
I really don't get mad when people are nasty to me, I kind of find it funny. People are rarely nasty to me though. If people insult me I take it joyfully (even though inside I may be pissed), I either agree with them and sismiss their insult as a joke, or I counter it with something just as insulting, but more or less seeming like a light hearted joke.