Anyone remember the comedian from a few years back that went by the name Gallagher? His head was bald on the top but he wore the "finge long and straight. The first few rows of his audiences always had plastic sheeting covering them because part of his act was to smash different fruits and veggies with a huge wooden mallet. The grand finale of this segment of the show was always a watermelon.
Anyway, one of his bits was that he invented a gun that shot "stupid stickers". If you had one of these you could observe another driver do something stupid in his vehicle and shoot a stupid sticker on to his vehicle. If a cop sees a vehicle with 3 or more stupid stickers on it he could pull them over and give them a ticket.
As funny as that was I couldn't help but see what a good idea in might be after all. I could go through a couple of rolls of stupid stickers a day with no effort.