a dialect, a heavy distortion of common language, deviant from the official language of a state.
a idiomatic language used by a small group of people or even a single person, often with a touch of humour or irony. This idiomatic language may appear vague and alienated to outsiders. It may be used disparagingly toward others. (See for example lamer.)
statements about something made in a routine manner, without deeper analysis of the subject.