Misplaced apostrophe spot

Has anyone else seen the advertisement on the side of buses, for who knows what, that says "it's you'er than you" in massive lettering? Why is there an apostrophe in youer? I'd like to see "you're" used correctly more often, but don't know what this is about. Dr Seuss didn't use an apostrophe! It took me a good few seconds of looking at the advertisement to even understand it what it said, which doesn't make for great bus advertising. Surely a hyphen, if anything, would have been more appropriate.