Someone on Zazzle (the slightly geeky yet more modern person's Etsy.......kindof) has created these awesomely ambivelent or nuanced bumper stickers. Here are some examples:
Clearly these are made for me even though they pretty much go against what they are. I think bumper stickers are kind of wierd. See a previous post and you will understand what I mean. But these catch that wierdness and send it right back at the reader. Love It!