BUMPED AND UPDATED: I'm keeping this on the top o' the list for the evening. Email it to your friends if you get the chance.
After seeing the last batch of gas pump stickers, Larwyn suggested a few modifications.
Here's how they look on the pump.*
Click to zoom on this "four-pack" to print your own copies.
And here's a closeup.
* Remember: only affix these to gas pumps if you have the owner's permission.