Dude. What did you expect?
Also... do you go sticking your dick in weird holes out in the world? What makes it OK to do at Burning Man?
That's the thing I like about Burning Man. It's a safe place to do just about anything. Try stuff out. Wear a dress. Stay up all night. Embrace a stranger. Whatever.
In the end, it is a city of 70k people, and - just like any other city of 70k people - you can find whatever experience you are looking for, with the added benefit of it being a safe place to experiment.