orgies

I have a pretty important birthday coming up and I was wondering if anyone had any fun ideas of things to do with large groups of people (possibly at night). I could have a party in the dumpster, but we had one half a year ago and I don't want to wear out the idea. I could do something boring like have a party and buy a cake and eat it, but I was looking for creativity. Give me some ideas; nothing is too wild. An ex of mine already suggested a mass orgy on the steps of the police station, but I both don't know the legal status of that or their motives in suggesting it! Ideas for an awesome day/nite for a really nutty adventurous kid?