One I can think of is dumb jock, which could be true and not true; For the most part though its just a sterotype, most "jocks" in highschool do work hard to keep their grades up and excell in class so they can stay on the team. But, there are also jocks who are quite dumb and should be failing, but instead they cheat, lie, make other (typically weak nerds, another steroptype) do the work.
