Here are a few:
1. People who kill animals for no reason or just do animal cruelty.
2. Work so hard on something and it gets ruined.
3. People who treat me like a baby or just know it all.
Just a few because I could go on forever. xD
people who don't listen, and people who don't tell me when they have a problem with me :p
how am i to know if you don't tell me?!
[> n <]
People who act stupid and/or immature, people who are ignorant of knowledge, people who hate science, most (notice I didn't say all) religious people. And very many other things.
Homework assignments with a specific source to find your information that doesn't give you the answers you need.
People who don't listen--
Well, people in general.
My sister. Or when I do something and I like it and Its nice, but then it gets destroyed.
I.e when you are writing something and your work gets deleted
or when you have a good idea and people wont listen to you
This household! They annoy me so bad! But also I get annoyed when people do quotes from fandoms and get them wrong.
And most people I know, luckily I know a good amount of friends that don't frustrate me!
just people in general :p