I kind of have a chip on my shoulder, so a lot of things irritate me.
Off the top of my head, though:
-Children and their stupid parents that allow their kids to be screaming monsters. I didn't act like that when I was little because my parents are not morons.
-Cashiers who comment on what you're buying.
-Creepo 35+ guys who loom around 17 year old girls.
It's always the creepos, never the sexy ones who hit on me...
-People who forget the rules of four way stops and wave me to go even though THEY WERE THERE FIRST. It's always dudes in big trucks, too.
-Most of the people who go to my school.
-School in general.
-My uterus
... I could write a book, but I'll stop there... Gotta remember to maintain my positive energy.