The faux Leonardo that sold for 400 million greenbacks — plus a 50 million fee for Christie’s — was a subject dissected again and again by the glitterati at two rather splendid dinners given in the Bagel by George Livanos and Mick Flick. My fellow guests were not the types to be outraged or shocked at the obscenity of the amount of moolah involved, but it beat talking about the weather or why the media hate Trump as much as they do.