"You know what would be a great idea, we should invite the whole family to your next birthday. It's a long time since we had a real family party, would be great to see them again, don't you think" Phil asked.
"Mmm" Sharon answered, her mouth full of Phil's cock.
They were in their bedroom, they were watching a porn movie together and after having played with each other for a while, Phil have asked her to suck him off. She was naked, her big breasts pressing against Phil's stomach as she sucked his cock. She was also watching the movie where a blonde lady was on her knees, looking up at a circle of eight huge black cocks pointing at her face. Soon the guys started to cum and moved closer, the thick jets of cum landed on her upturned face.
"Hey, look at that, she getting so much cum, man that's so hot. Would you like to be in her place?"
"Oh yeah, that would be good to feel all the cocks spurting on my face, uhm I'm so horny, are you ready to cum?
On the screen the blonde had turned her face to the camera and her tongue was playing with the white sea of cum in her mouth while she was looking at the big cocks that were hanging half erect around her face.
That did it, Phil started to breathe faster and panted: " Oh yes, open your mouth"
Sharon stroked his hard cock faster and soon the cum splashed her face and shot into her mouth, it felt so good on her face, With the other hand she stroked her pussy and soon she came in a huge orgasm that shook her body.
After they had both cum, they lay embracing and talked about the party Phil had suggested.
"Are you sure that it will be ok to invite them all, I mean some of them might know what is going on in our house, but not all know and they might find out."
"Well, the way I have planned the party they will all know for sure. After all it is your birthday, so you should be the center of attention in more ways than being the hostess."
"What do you mean "in more ways than being the hostess" she asked?"
"The usual role of the hostess I'm sure you know, but for this party I would like to expand that role to be more intimate", Phil replied," but just let me handle the planning, I'll tell you what I mean later".
Next morning Phil told the rest of the family about the plans for a birthday party for the mom, they all thought it was a great idea.
Both Peter and Rob was exited to get to see all their relatives, both their cousins of which there were quite a few good-looking in between, but also some of their aunts whom they had been secretly admiring for years and who even now were very sexy.
Karen protested mildly:" Aren't there any well hung males in the family", she asked?
"Oh yes" Sharon said, " there are actually quite a number of good hunks in the family, don't you worry, you'll be in good company."
For the next few weeks they found time between their sexual escapades to organize the party and soon it was the night before the party. Phil had called them all into the kitchen and they sat around the table discussing tomorrow's party.
"Ok, I think we're all set for tomorrow, we just need to decide one last thing. What is your mother going to wear for the party?" Phil asked.
Sharon was sitting in her usual outfit, almost naked apart from black stocking and a garter belt.
"Well, I have this new white dress that I bought last year, I think that would be ok to wear", she said.
"I was actually thinking of a bit more revealing dress, since you are going to participate quite a lot in the entertainment as well", Phil said.
"What do you mean", the boys asked.
"Your mother is going to be a real family slut tomorrow, not just serving us, but all guest that needs entertaining. This is the part I have not told you about yet. Most of our family knows we're fucking each other and I know a lot of them do as well. So for the party tomorrow, you will be serving all the guests in whatever way they want."
"Oh boy, that sounds so hot," Peter said as he pulled out his cock and started stroking it.
"Can they do whatever they want?"
Karen grabbed Rob's cock and started jerking him off while she fingered herself. "If they want to have their cock sucked, they just tell her?"
"Yes, you will do whatever the guests want and wherever they like. So you will most likely find yourself on your knees or on your back most of the party, but I think that you will like it, you'll get lots of cock and get to taste some pussy, not to mention all the cum."
Sharon looked at Phil with big eyes.
"Do you really mean that? Don't you think some of the guests will be offended if we start to have sex during the party?"
"No, not at all, in fact I mentioned it in the invitation and all have come back and said they were looking forward to the party and the entertainment. Some of them even asked what they were allowed to do with you, I told them whatever they wanted to do was ok'"
Both boys and Karen were jerking off now, their minds racing thinking about the possibilities of having mind-blowing sex the next day.
"But I have bought some outfits you can try, we can then vote for the most sexy".
Phil fetched a bag with the dresses he had bought and soon Sharon found herself posing for the family in very revealing outfits. She could feel herself getting aroused, both because she actually liked parading like a model for her family, but also the thought of having sex with her relatives at the party tomorrow.
"So what do you think" she asked" I like the black most, but is it too much?"