I have been in Oberösterreich (Upper Austria) for about a week now. I was in Austria last November and December, where I went to Fucking & Oberfucking, as well as Vienna and Salzburg.
Several friends of mine here have been raving about "Maidult" in Passau, Germany, to me ever since I first stepped off from the plane. (By the way, Lufthansa flights are SO much better than United Airlines or USAirways.)
Maidult in English means something like "Festival of May". It is very similar to the well-known Oktoberfest, but smaller and it's held in late April and early May every year.
The best sign during my visit to Maidult was this one: