http://www.bbc.co.uk/news/uk-england-sussex-10715115

A person who put up enlarged photographs of male private parts around a town in Sussex is being sought by police.

Several large images of a man's penis with a yellow bow tied around it have been taken down from car parks and places close to schools in Lewes.
"However, from what we've seen, if this is a self-portrait, the artist won't be in a hurry to be identified."