Something to do when bored... and in a parking lot

Have you ever driven though a parking lot and saw someone parked in four spaces at once? Now you can vandalize their vehicles with I Park Like An Idiot stickers. $10 for 20 stickers, they're the size of bumper stickers, bright yellow so they're easy to spot, and, if regular bumper stickers are anything to go by, a pain in the bum to scrape off.