Anything is fine as long as you are drunk. Or pay for it. Or at a festival. That's part of the charm...no hugging or kissing in public, but we'll parade this through the streets:
http://namcotravel.jp/user/bubbleb/files/1158341580.jpg

I think there was something in the incense they were sniffing a thousand years ago, too:
http://en.wikipedia.org/wiki/K%C5%8Dd%C5%8D