It takes A LOT to get me to the point where I lose my cool, as among my brother and friends I'm usually the designated "voice of reason" who's making sure that everyone else stays calm - but I'm human like everyone else, and very occasionally, a spark of anger will come out (only for what is probably a good reason, though). My temper rarely emerges, but when it does, my advice to the person who brought me to that point is look out!
Im usually real calm, and do never really getting p*ssed off, I'm rather passive and trying to control myself.
But yes, I do sometimes get real mad, then usually very. Mostly its all about small things I've felt annoyed about and things that has provoced me during a long time, and when I've just kept avoiding it. Sooner or later it bursts, I get p*ssed. Lol =p