A few weeks ago, I mentioned the credit card prank, where a humor writer tried to sign his credit card receipts in all sorts of different ways. He drew landscapes, signed his name in Egyptian hieroglyphics. Not one cashier wondered what he was doing.
Well, he has three more articles where he devises new ways to try to get noticed. Despite the fact that he sometimes holds up lines for several minutes taking photos of his receipts, nobody cared.
Very funny stuff.