favorite bumper sticker story...
going into a hardware store about 15 years ago in California, there was a beat-to-shit El Camino in the parking lot. Rusted out holes in the rear side panels, cracked windshield hadn't been washed since 1982, etc. There was a bumper sticker on it that said "My kid beat up your honor student". Someone had taken a USPS shipping label, and made their own sticker that they stuck next to that one, and it read "My honor student blew up your car."
I smiled.