This is so completely true. I have come across people with behaviour conforming with most of the points stated here. Especially the part when they start glorifying their otherwise boring job. It is not only extremely annoying but on some reflection, you realize that they do this in order to make you lose confidence in yourself and to make you doubt your abilities. Some people get off on this. The best way of dealing with such jerks, in my opinion, is to call on their shit and give them a piece of your mind. ASAP.