Many of us will know the dilemma of really having to go to the bathroom only to find that there is no bathroom in sight. For males, a lot just tend to find a wall and relieve themselves there, much to the disgust of passers-by. Since urinating on walls is a big problem in Germany, those of the city are fighting back in a unique and excellent way that is a big contender for being a permanent stop against public urination. This is done using a superhydrophobic coating that workers paint onto the walls. Sounds boring, right? Well, this coating will cause the urine to bounce back at the offender and therefore, deter the drunken man from peeing against a wall. The coating is invisible to the eye and therefore, no man can know what walls have it and what ones don’t. Thus, a permanent cure for drunken public urination. igstpauli.de (h/t: laughingsquid, spiegel)