A group of travelers known as the Vagellans  are devoted to uncovering hidden erotic imagery in architecture. Recently, the group has flocked to St. Matthew’s Church in New York to view a stained-glass window depicting Satan with a massive erection taunting a kneeling St. Peter, as well as to the Vietnam War Memorial in Washington, D.C., where they found a carving of U.S. President Richard Nixon with a bomb lodged in his rectum. Their latest and most unexpected discovery, how