A grandiose windbag who bullshits for a fee. They can't do anything useful, so they enter teaching, but they find out they can't teach very well so they try to teach teachers, but the teacher they teach think they are tossers, so they become academic consultants.
Chas: Who the fuck is that grandiose tosser at the front of the room who keeps bullshitting?
Nick: He's what's called an Academic Consultant. Tosser.