college ppl kind of get that snob reputation because while everyone else is struggling on their own, college ppl have their own little clique, like in lectures and stuff. Individually they are mostly nice people, but as a group in the first few weeks of semester they do come across as formidable and snobby. And if they take offense to that, maybe they should look at it through the eyes of a poor little nigel first year just trying to make friends.
the snob reputation is kind of enhanced by the fact that many have never heard of places like hornsby or Liverpool. Its just an insular sort of life that excludes most of the general uni population, thats why college ppl have that reputation.