Too late for 2015, but it’ll be back:
One day a year, visitors to the Saishōji Temple in Ashikaga are invited to shed their stoicism and politeness for a night of cathartic cursing. At the akutare matsuri (“rowdiness festival”), also called akutai matsuri (“festival of abusive language”), held annually on New Year’s Eve, hundreds of worshippers make the forty-minute trek up the mountain to the temple, shouting insults and epithets along the way.
Then again, shedding that politeness doesn’t come easy to the Japanese:
Although all potential targets of these insults are fair game, the curses themselves are typically mild, especially by Strong Language standards. The insult of choice is usually “bakayarō!” — loosely translated to “you idiot!”
I’m just imagining how this sort of festival would play in, oh, New Jersey.