Let's see.

--People honking a millisecond after a light turns green. When people do that, I really feel like putting the car in neutral, put my foot on the accelerator to make it look like I'm trying to move, and then put my hazards on to make it look like there's some kind of car failure. I have never actually done this, but oh, the temptation!
--Tailgaters. When people do this to me on the highway, sometimes I try to match my speed with the speed of the car directly on my right so speeding around all of us becomes that much more difficult for the person that has their impatient panies in a bunch. Also, I just happen to decide that's a great time to use my washer fluid. Now this, I've actually done.
--Looking for a job and all the nonsense that involves. I honestly feel I could do a whole standup comedy skit on just this alone.
--Interviews. Basically an exercise in how good you are at white lies. If you help train me well, I can do anything, let's just leave it at that.
--Smartphone batteries dying after barely even using them for anything. For all the wonderful and amazing things smartphones can do, they sure can't do them for very long at all.
--Grinding/farming in MMOs/RPGs. Way to make a game feel more like work. When games start requiring excessive amounts of this to get ahead, that's usually about the time I move onto something else.
--Discussion about politics. It's the fastest way to lose faith in humanity.
--Atheist rants/insults. If you don't believe in God, that's your own business, but don't talk down to me just because I do, because I don't even want to hear it. Let's just agree it's better we keep our beliefs to ourselves, please.
--Debates with hardcore vegans. I've seen them, and I've wanted to wish I hadn't.

I'll be honest, usually I'm a very chill kind of guy, so even when I see this stuff, I kind of just let it pass along, but deep inside, I'd want to drop it all in a fire. A lot of the basic stuff like spam mail, sales calls, and stuff like that could be put on there, but that's already on everyone's list.