When people do things only because they know it will annoy me. (most things don't even bother me anymore)

People who think they know me better than I know myself.

People treating me like a child and thinking I don't know anything.

When people think they're always right, superior to others, or expect people to believe in the same things they do but have no respect for other people.

On a lesser scale...
Indecisive customers at work.
Foreigners calling on the phone from businesses.
Repepetive commercials that aren't funny.
Sneezing. (not other people, I hate it when I sneeze)
Mom doing a quick sigh. I now slap myself every time I do it.
Overly cocky people.
People calling my work and hanging up. That's so childish.
Running into objects due to my own stupidity.
When someone else just barely touches me and it feels like a spider is crawling on me.
When the above happens and I say "You're touching me" and they deny it. Or someone's shirt brushes up against me. Either put pressure against my skin or don't touch me at all. And don't drop any hairs on me.
Also I hate it when people say I'm gonna gonna snap one day and kill someone or poison somebody or flip out when I hold a knife. I hate it because I don't know why people act like that, I'm a really peaceful person and would never do something like that. It gets on my nerves though.