A prude on New Year's Eve

2012 began with an invitation to an orgy.
Except that I wasn't aware the invitation was for an orgy.
A friend, who enjoys an open marriage with her husband, and who is a bit of slut, invited me and my son to join her family for a New Year's Eve celebration.
Now, do not misunderstand me when I refer to her as a slut that I am doing so in a negative connotation. She is woman who owns her sexuality and enjoys it with many, both males and females. It isn't a judgement, only a word that gives an accurate definition of her sexual behaviors.
And yes, I also refer to her husband as a slut.
I adore them both but I have throughout the several years of our relationship avoided having sex with either of them for one reason or another.
New Year's eve I was expecting the usual undercurrent of sexual energy among the adults but because there were children there, including my 13 year old son, I was not prepared for anything blatantly sexual to happen.
I am not a new age mother.
Sex is not a taboo subject in our house and I have discussed homosexuality, pornography, and fetishism with my son in a manner that is appropriate for his age and maturity.
However, I still teach my son to respect and expect a measure of privacy, expect and exhibit a level of modesty, and I always separate my son (or any children) from unabashed sexual activity.
So, when my hostess answered the door to her "family" New Year Eve's party in a corset that displayed her ample DD sized breasts, I began planning an exit strategy.
There were five or six couples, only one of which I had met before and didn't particurarly care for the wife.
I was the only "single" in the crowd. I was also only one of two who were sober.
Here is where I admit I have sexual hang-ups when it comes to strangers.
I am not comfortable with becoming sexual with a person, or in this case, people who I just met for the first time.
It isn't that I am always uncomfortable because I have had my one night stands but those are the rare exception and usually do not include multiples of people.
I was off balance because I was expecting a "family" event and was blindsided by make-out sessions around every corner, women exposing their boobs, and men getting blow jobs in the bathroom.
All the while, my son and other children are in the house.
I was anxious in trying to keep all the children from being exposed to the sexual exploits of the drunken adults who didn't seem to care about the inappropriateness of their behaviors.
At one point, as I was telling a woman to put her top back on because the children had a path through the kitchen where she was, I was called a prude.
So be it.
The responsibilities of adults and the expression of sexuality should change when children are present. The fact that it didn't during this party had me practicing breathing techniques to keep my blood pressure in check.
The clock hit midnight and at 12.01 a.m. I was out the door with my son.
My lesson is to never accept an invitation from this particular friend without expecting the event will include sex and to know I have boundaries that could make declining the prudent thing to do.