I have to admit that I like Banksy's weird take on art and humour. Not exactly sure about his advertising poster, and I wonder if that is his or an advertising idea that someone else said he should use. But, anyway, I had to show this artwork of his that I think it very clever.
This is a statue of Hebe, she is the Greek Goddess of youth, and her name comes from the Greek word meaning 'youth' or 'prime of life'. Here is what the original statue looks like.
If you search 'Banksy' on Flickr you will find a pile of images from his recent show.