Buzz·Posted on 6 Mar 2015This City's Walls Have A Substance That Splashes Pee Back At Public Urinators"It's peeback time".by Alan WhiteBuzzFeed News Reporter, UKLinkFacebookPinterestTwitterMail Well here's a cunning innovation. View this video on YouTube youtube.com Welcome to St Pauli, Hamburg's party quarter. Around 20 million people visit this area a year, and that creates an obvious problem. Which isn't great for the locals. So now the area's "peeing back". Yup. They've covered some of the walls with a super-hydrophobic coating. Tap to play GIF Tap to play GIF And good luck to anyone who wants to relieve themselves against a water-resistant wall. Tap to play GIF Tap to play GIF And as Julia Staron, a spokesperson for the project says: not every wall has a warning sign, so consider yourself warned, street pissers.