Bumper Stickers

I find myself rubber-necking to read bumper stickers very often. Yet, as much as I love reading them, I don't have a bumper sticker on my car. I have one that I bought over a decade ago and its still sitting there unused.
It's one of the "Big Dogs" items. It has a bunch of dogs running in line and it says;
"Unless you are the lead dog, the scenery never changes"

Another bumper sticker I love is "My Karma ran over your Dogma"

Do you have any favorite bumper stickers? Any that often get a reaction out of you?