The CW is under no delusions about its new docu-soap debuting tonight.  High Society is “enjoyably ridiculous,” writes People.  “Demented,” chides New York Magazine.  And the network’s own tongue-in-cheek promos are titled “Cuckoo’s Nest.”  In short, a campy hit in the making.  While west coast tabloid families have set the bar oh-so-low, viewers will be tickled—if not mortified—at the inane antics of real-life socialites on Manhattan’s Upper East Side.  Reigning Park Avenue princess Tinsley Mortimer, aka The Tinz, is ringleader in this circus, which features her family, flaky friends and a divalicious foe, Social Life editor Devorah Rose.  Seems the Gotham elite are peeved with Tinz and her posse’s public trainwreck.  “If she’s appearing in US Weekly, she’s a (mere) celebrity,” sniffed one blue blood to the NY Post.  “She’s simply not a socialite anymore.”  Oh, please.  A fixture on the gossip circuit, Tinsley’s in the midst of a high-profile divorce from her prep school sweetheart, Topper, heir to an oil dynasty.  The cameras capture that drama, as well as scandal with Tinz’s rebound beaus: a German prince who Ms. Rose labels “a pauper, despite his royal name” and eerie Idol alum Constantine Maroulis.  Side-cliques Paul and Jules, meanwhile, have their own issues.  Caught breaking sconces at a friend’s loft, he told Page Six:  “It’s not like rock stars don’t vandalize hotel rooms and such all the time.  I seriously don’t understand the huge deal.”  Jules is famous for tossing the bubbly and hobnobbing with Prince Harry.  “I hate her,” Devorah clucks.  “She’s a mess, and not a hot one.”  Highbrow hijinks.  It may not be pretty…but it sure is fun to watch.