I don't actually have a bumper sticker on my car. I do like reading them on other people's cars.
I was browsing around PBS.org and on the Independent Lens website is a bumper sticker quiz. You answer a few questions and they offer you your ideal bumper sticker.
Mine? It was a toss up between "My karma ran over my dogma" and "Practice Random Kindness and Senseless Acts of Beauty."
Go take the quiz and come back and tell me what your bumper sticker is. Or just tell me what you have on your car.