Yes, and No.
I get irritated easily, though I have learned to scrape off most issues. I know I am easy to set off, so I compensate.
Unfortunately, I also have a tendency to ignore something until I am utterly freaking outraged, at which point I blow like a volcano, and all sense of reason and logic goes out the window. It never helps, but that doesn't register until later.
It tends to pass fairly quickly, and I usually feel bad. Quite often because I realise that I am being unreasonable, and then there's the fact that I am not a small man and some people who see me angry often become afraid. I find this silly because I'm not violent-- I'm actually terrified of hurting people-- but they persist in being afraid.
Usually what sets me off is when my sense of justice is offended, particularly when I'm the wronged party. Sometimes it's just ridiculous... here's an example. I'm a big Harry Potter fan, and have read (or listened to the audiobooks of) all the books several times, but I have problems getting through the fifth book. It's Umbridge-- it particularly hard to tolerate the character once you know the ending to the book, and the information she's had all along. I can't listen to that one while driving.