A celebrity roast of yours truly (benefiting the Callen-Lorde clinic) was organized by publicist Daniel DeMello and company last week at Actors Temple, where a host of notables gathered to rip me a new one, as if my existing one weren't big and floppy enough. It was an extremely charitable night of uncharitableness called "Fork on the Left, Knife in the Back"--it's the name of one of my books--but "He Had It Coming" …