So, I've been sent this poster by, like, six readers. All have said it's an anti-acid ad via the Belfast city council. Well, it's not. If you go to the url listed at the bottom of the poster, it takes you to the anti-littering page of the city's website. Perhaps it's a bizarre anti-dogshit ad? No, it's just a punking by a street artist. Previously in: cool NYC street art.