It seems to me that In Bonn Altstadt (a quarter of Bonn where I live) the amount of graffiti art has exploded in the last half year. But maybe I am only paying more attention to them. This morning I took my camera with me when I walked into town.
This one I hadn't seen before. The text says: "Die rote Unterhose nervt". A word by word translation would be something like "the red underpants are bugging"