-People getting into my personal space, especially someone I don't know.
-People talking with their mouth full, chewing with their mouth open, or just being generally disgusting in their eating noises.
-People who ask other people about being single. Next time someone asks me, I might say, "Well, I killed a guy when he tried to rape me, so I've been a little distrustful of men lately."
-When people don't use their turn signal. NO. EXCUSE.
-Using the self checkout when you are both incompetent and attempting to buy a years supply of groceries.

I have SO many more. I sometimes think I dislike people in general.