For me it mostly driving related:
#1 idiots that cut criss-cross driving lots, almost hitting you as you follow the marked lanes and then flip you the finger
#2 people that merge without even looking, or expect to cut in front of you just because they are in a merging lane, and if heavens forbid you do not let them butt in flip you the bird
#3 people that sleep at green lights. let's face it, unfortunately 90% of all N/A drivers drive bloody automatics, that means you have a 50-50% chance of getting the right pedal, now hard is it to remove foot from one and move to the other...and when you honk at them to move their *****, they flip you the bird
#4 people making left turns....stay in your own bloody lane, do not move over to the outer lane, use the tight turn so that people can make a right from the opposite direction as well, this goes for those making right turns as well.....and then when you turn like you should, and they want to be in your lane, you honk at them, they flip you the bird!
#5 when there is a double turning lane, and the person in the other lane beside you cannot aim/steer their cars into their respectful lanes, instead they decide they will drift into yours expecting you to do the same! no those bloody lines are there for a reason
#6 people that drive on the highway and then at the last very possible moment decide they need to get off at the exit, cutting across 3-4 lanes at once
#7 petite/tiny little soccer moms in huge trucks/suvs and minivans with a herd of kids, being barely able to look over the steering wheel driving like they are the only ones on the road - buy a smaller car
#8 one word: minivans
#9 baby-on-board signs, what is that for? showing off or trying to excuse yourself in advance if you pull a dumb***** move?
#10 people that will drive on the shoulder just so that they can get a few cars ahead of you....pays to have a truck, I always pull in front of them, get in line the rest buddy
....these are a few for now, but I could have a full hours worth