Halloween!!  The day teenagers get a free pass to wander the streets, younger kids learn what it feels like to heft a few pounds of candy and make sure the littlest munchkins don't get overlooked, moms and dads either walk for over two hours or sit on the porch handing out candy (where the littlest ones join them after the first half hour), and everyone gets to be just all-out silly. That is my definition of Halloween. =)