An astonishing, loopy and very true World War II story about Great Britain tricking Germany into believing false invasion plans has been the source material for non-fiction books and movies dramas. But this ludicrous 1943 espionage plot involving a corpse, fake papers and amazing good fortune also lends itself to absurdity. That's the approach the Brit comedy collective SpitLip takes with "Operation Mincemeat," the O…
