After the recent spate of toilet cam stories (Canadian Privacy Law Blog: Montreal mall fake toilet-cam raising concerns, Canadian Privacy Law Blog: Montreal Second Cup owner forced to take down bathroom surveillance camera), I was at first shocked, puzzled and then amused by the sticker that was posted on Boing Boing. It had been spotted in a bathroom in a San Francisco coffee shop. It turns out it was part of a prank created by Sean Savage at Cheesebikini, though commentators at Boing Boing say they were originally part of a set of stickers produced by Maxim Magazine. In the interests of science, I've discovered that there are others who put stickers up in bathrooms suggesting you are being watched, including a Flickr user who puts labels of "THIS IS A CAMERA" on bathroom fittings. For more info and a handy PDF to make your own labels, see: cheesebikini? » Blog Archive » Bathroom Prank.