can also be used as a verb (see below)
* pissed off
* tit in a wringer
* undies in a bundle
* bent out of shape
* miffed (agitated and fey)
He's still ticked off about the election of 2000.
These *#%$! referees really tick me off.
Ticked off. An intermediate stage between being annoyed and being pissed off.
When you are annoyed, you generally try to calm down, but if you get ticked off, it clearly seems more "enjoyable" to use violence, wich leads to being pissed off.
I rode my bicycle through the streets at high speed, when all of the sudden a slowpoke obstructed my passage. (sceams) Now I'm ticked off!1