I was in some kind of class, on the front row.  The girl sitting next to me asked me if I would like to participate in an orgy.  I said yes, and she told me the address to go to in order to "try out."  I didn't know exactly what that meant-I guessed it had something to do with being inspected for VD or something.  It seemed like a good idea, and so natural-to have an orgy and just invite people.