Heh. Well, I'm a bit of a hothead, but I've now been on medication for blood pressure and heart rate for a while so I'm calmer than I used to be when I'm pissed off. I still can feel the inner Hulk rising within me, though.
My face turns red easily and I scowl and my brain starts cursing and thinking really mean things, but I usually don't let most of that come out, I will often take it out on inanimate objects like if I'm in the office, I have thrown things like sticky note pads and papers and stuff. When I'm driving, I pretty much just call the bad drivers names in my head.
I tend to forgive most people really quickly, actually. I often make excuses for people's behavior, or I find reasons why I should be more upset at myself than somebody else. The only people that it takes me a long time to forgive are those that truly hurt me very deeply like my ex-wife. It took me several years to forgive her but I finally did a few years ago, and it was good to have that burden off me.
In general, I don't usually stay pissed off very long. It comes in short bursts that are quickly gone and I can be laughing and smiling a few minutes after somebody made me really mad. I tend to stay mad at myself much longer than other people.