Here in Defiance — a town that sums up the mood of Senator John McCain right now – the Republican nominee gave a shoutout this morning to America’s most famous plumber, Joe Wurzelbacher, who was, or so the candidate thought, in the audience.“Joe’s with us today!’’ Mr. McCain hollered at a cold outdoor rally at Defiance Junior High School. “Joe, where are you? Where is Joe? Is Joe here with us today?’’ Nothing. Maybe he had to take a lunch with his agent?Watch It: