I've designed a bumper sticker, and I'm going to try to get it printed at one of those one-off sticker places. Feel free to do the same if you like it. (Click on the thumbnail for a full-size image.)
To me, this captures the amateurishness, incompetence and simple lack of regard on the part of the Resident of the U.S.
I live in Nashville, and I'll probably get some horn honks and some one-fingered salutes, but I bet I'll get more people asking where they can get one.