Things that annoy me....
1. Bad spelling and grammar/text speech in inappropriate places. By this I mean in places like roleplays, serious conversations, or in the case of another forum 
I'm active on, the FTB forums, when asking for tech support. It makes it hard for me to take you seriously. 
2. Racism and discrimination. I'm fine with just jokes, but if it's serious, you are immediately marked down on my internal scale of intelligence.
3. People using my things without my permission. This applies even to my parents and siblings. 
4. Narcissism
5. When people go on about how they are horrible people...it pisses me off to no end. 
6. People looking over my shoulder when I'm doing something.
7. Special treatment
8. Justin Bieber(no seriously, that guy just grinds my gears.)
9. Trolls
10. Stupid people. And by this I mean people who try to act smart when they are the opposite. If you right out say you don't know what you are doing, then it's all good.