Bumper Stickers

I know this probably isn't the most appropriate but it caught me off guard when a friend of mine told me.  He said that the other day, he saw a bumper sticker that read, "STAY BACK. I MAY FLICK A BOOGER AND IT WILL LAND ON YOUR WINDSHIELD."  Again, I know its not the content that I will probably post on my blog too often, but for originality it gets a 10.  My wife has a great idea for a bumper sticker but I will have to keep that one quiet until she makes it.