1. People bugging me about spilling stuff or honest mistakes. Sometimes accidents can't be prevented
2. Amusia...

3. People touching hair and knees (something in my brain goes loco)
4. People putting others down for the sake of comedy...
5. Stupid questions. I'm not talking about the honestly-I-don't-know questions...the ones where people could think about it for like 6 seconds and figure it out, or wait for the teacher to actually carry on with his lecture instead of rudely interrupting it.
6. That look people give you when they see you doing something strange as if to say "Wow, what a noob". It disgusts me.