I created this sign after seeing a really great comic by Toothpaste for Dinner. I stuck it on public bulletin boards around my city and I'm sure it'll create a fair amount of WTFing from the people that read it. The original comic is below.
Visit our Printables page and you can download a PDF file of this poster so you can hang them up too. Also, if you don't read Toothpaste For Dinner religiously, then you're going to hell. Visit their website at www.toothpastefordinner.com.