What really gets on your nerves?

[Rowan]

Not meaning to be negative, but im just curious. What gets on your nerves and why? Noone ought to judge you for the significance of your pet peeve as im sure whatever it is will be of relavence to your personally. I have many hates which is why im such a positive and happy person. Ill share one of which you might not know about. I dont know the word for these kind of people but I would actually be grateful if someone could help me out with this one.

People that go to uni and assume they are smarter than someone that doesn't. It may be in topics relating to their area of study, or all together. Perhaps these same people would stick their nose up at you if you offered advice on a subject they study that they are finding difficulty with. It pisses me off because I have a long time friend who has behaved this way to me a couple of times recently since he started back at uni and it is very insulting. Why ask me a question if you dont care for my opinion?

What is that called? How do we label these people? Im sure they exist in many places.