Grasping at straws?

Mozart (as in Wolfgang Amadeus of that ilk) is said to have stopped on the outskirts of the Austrian town of Raschala in 1787. Not surprising perhaps that the town should try and maximise the tourist potential of this episode - until that is that you learn that the purpose of Mozart's stop was to have a pee by the roadside! Undeterred by this, the town has put a plaque on the stone where this is supposed to have happened, and christened it the Mozart Pinkelstein (Piss-stone). What's that saying about there being no such thing as bad publicity?