hmm
What kind of "gentleman" has a hotel room party with friends where he is naked? If there were women in the room, they wouldn't have condoned such a stunt...heck they'd want him back in the room as soon as possible.
If it was other guys...well, that's just too San Francisco. 
Not that you looked mind you, but did he have a Prince Albert? That would be a dead giveaway.
It occurs to me that my life experiences pale in comparison to The Inimitable Mr Belmondo. 
Monterey




