IS THE FOURTH WALL A URINAL? In Eckhard Gerdes's fifteenth novel, two women friends - one from the city, the other from the suburbs - attend opening night of a cryptic new play: "Pissers' Theatre." Oddly enough, both the play and the theatre it's being presented in have been designed to accommodate audience incontinence. Thus, the production pauses whenever someone needs to empty their bladder. This bizarre experiment plays havoc with the show's...