Linguistic dissonance

Language, as with many forms of complex communication, is linear. Its use and context establish tone (the attitude in which the author conveys), with the logical expectation of consistent perpetuation. When one exhibits an unanticipated deviation from the aforementioned parameters, such that its register, dialect, and/or vocabulary is at a significant distance from that previously employed, its effect can best be described as being "totally fucking weird"

This is also known as being "sophisticated as hell"; however, linguistics prefer to call it "linguistic dissonance".