Someone who tries way too hard to make an impression on others and is far too self conscious to ever live a happy and meaningful life. They think they are unique, but really they are simply a slave to their own subculture's trends. Overall, you shouldn't dislike hipsters, you should feel bad for them.
Look at that hipster, with his scarf and his skinny jeans. Poor guy, he must be miserable spending all of that time trying to attain that look. And oh, look, he just ordered a PBR. Never mind that that beer tastes terrible, all he cares about is the fact that he is upholding an image