One of John Edward's negatives was that he was "gauche caviar." I got a sense of what this idiom must mean, but had to look it up on wikipedia:
Gauche caviar (Caviar left) is a French term to describe someone who claims to be a socialist without feeling the need to espouse an appropriate lifestyle. It implies that the person is less than sincere in their beliefs.
Gauche means left in French; Rive Gauche is the left bank of the Seine (specifically a tony area along the left bank of Paris). But in English, we can also call something gauche if it's inappropriate or vulgar. That's an exaggeration of gauche's second meaning, awkward.