A person who burns you with their immense vocabulary of words. Normally someone who wants to sound smart and make you feel incredibly confused and quite stupid but is really an idiot like you.
Tom: "Dude your such a dick"
John: "Go suck on one you pompous freak of god's nature."
Tom: "Good one. Now you sound like a dick and a sophisticated douche."
Definition for today's 21st century America to describe someone with class, manners, refinement, courtesy, and common decency. In other words, a snob or shitbird. In the movie Idiocracy, someone with those traits was "faggy".
Sort of the Dunning–Kruger effect as applied to sophistication. A cognitive bias that individuals with somewhat limited cultural or worldly experience overestimate their own sophistication. A smug attitude as related to elegance, good taste, and sensibilities by someone who thinks they are all these things, but in fact are not. A "put on" or show of sophistication by someone who in fact lacks sophistication.
Jim, who bragged about being a collector of fine art, stated that Thomas Kinkade was his favorite artist, thus exposing that he was pseudo-sophisticated when is came to art.