I'm with Thunderchicken on this one. I'm always... just always pissed. I've had serious anger problems since I was 6 & 1/2 after moving from MN to WA. I breathe to keep myself from boiling over most the time, and I walk away from as many fights as I can, but my temper is absolutely abnormal.
I knew I had issues when in 6th grade I caught a kid smashing a piece of pottery I'd made for my mum. I was outside the building and he was leaning out a window, so he shut the window and pointed and laughed. I smashed the window out with my hand and grabbed him by the head and tried to impale him on the broken shards before being subdued. Kinda knew I had to keep shit in check after that.
And yeah, in the car I definitely have a temper.