In Germany, you can joke about everything,” quipped Peer Steinbrück recently, “except about dog owners.” And Steinbrück, a former German finance minister under Angela Merkel, would know. While still a politician for SPD, he became well known for his quick wit, and today, after retiring from politics, he has been touring the country on a regular basis, performing in a satire show with popular German political satirist Florian Schroeder. In …