Given the political nature of many bumper stickers, self-moderation would be appreciated. If my count gets to three (it's at two) and I forget my meds and still can't get those kids off of my lawn, then I'm gonna have to do some thread pruning.
My favorite is when I lived in Milwaukee. I was heading downtown to here a band I really liked. The guy in front of me had a bumper sticker that said "Honk If You Love Jesus". So, I did. He and his passengers all gave me the finger and called unkind names.