This part picks up from just after Jackie has departed her sister's house, following their marathon fuck session.
For those who wish to know, there are a couple of references to anal sex. As ever; All sex acts, be they described herein, or otherwise alluded to, took place when the participants were over the age of eighteen.
Christine returned to the kitchen to wash the coffee mugs, then sat at the table to let her thoughts settle. Today had been both marvelous and fitting for one of their birthday celebrations, heightened by the long wait they'd had for such a session.
She dwelt on the fact Jackie had declined to be ass fucked by 'Rob Junior', the strap on they'd resorted to after Jackie's husband, Rob, had been taken from them. It meant she also missed out, and it was never the same when she used the fake cock to fuck herself in the ass.
"What I need is a real cock," Christine exclaimed before recalling her daughter was upstairs.
Kim, having not heard her mother's plaintive cry for cock, was still toying her pussy lips while plotting the seduction of her Aunt Jackie.
"Are you in for the evening?" called her mother from the foot of the stairs.
Kim used the hand not covered in pussy juice to open her bedroom door, then called down, "Yes. Why do you ask?"
"Because I'm going to have something to eat soon and wondered if you were hungry."
"Famished, I only had a sandwich for lunch."
"Then come down when you're ready."
Kim washed her hand and put on a pair of clean panties before joining her mother in the kitchen.
"So how was your day?" asked Christine.
"It had its moments."
"Were any of those moments with Emily or Kendra?"
Kim kept her cool. "Are you asking if I'm gay?"
"I worry about you, is all. You never tell me what's going on in your life."
"And I suppose you're an open book," retorted Kim. "Tell me, is there someone who gets your motor running?"
Christine winced. "That's not the sort of question you should be asking your mother."
"We're both adults, Mum."
"That's as maybe, but you are my daughter and that changes things."
"The door swings both ways."
"What does that mean?" demanded Christine. "Please tell me you're not into swinging!"
Kim laughed. "It means, as mother and daughter, we get to keep stuff from each other."
Unable to challenge her daughter's assertion, Christine changed the subject. "What would you like to eat?"
"How about a curry with plenty of garlic? That way I won't be able to smell it on you."
Christine breathed into her hand and took a whiff. "Kim! That's rude. Your Aunt Jackie ate just as much garlic, and you said nothing to her."
"She's gone home to Steve, so not my problem."
"A curry it is," conceded Christine.
"Great. You open a bottle of wine and I'll start the curry."
Ignoring the half finished bottle of white left from her afternoon with Jackie, Christine opened a red, poured out two glasses, then handed one to her daughter.
"Thanks, Mum. Take a seat while I cook the curry."
With nothing to do, Christine's mind roamed over the day of sexual euphoria she'd had with her sister, and her thoughts on getting Steve out of the way so it could happen more often.
"Your aunt tells me Steve just hangs around the house all the time," said Christine, as if making idle chatter.
At the mention of her cousin, Kim's ears pricked up, but she didn't turn from chopping the onions. "How long has it been since he left Karen?"
"Long enough to start dating, according to Jackie."
"Has he overstayed his welcome?"
"No! Nothing like that. I think she's just worried he'll vegetate his life away."
Kim imagined Steve's cock turning into a carrot and laughed.
"It's not funny, Kim. Steve's gone through the mill with Karen and may have been put off women for life."
"Oh, I'm sure that's not true," Kim replied, having had Steve pump her full of his seed only this afternoon.
"Well, either way, I thought I could help."
"You!" exclaimed Kim, faking shock at the thought.
For a moment, Christine imagined sucking on her nephew's cock. "No, not me. That would be inappropriate."
Kim noticed her mother hadn't used the word, incestuous. "Then how?"
"Do you recall Charlotte had a huge crush on Steve."
"That was years ago, Mum. And besides, she's dating Brad."
"It's just a thought."
"I know you don't like her choice in men, but isn't it up to Charlotte who she dates?"
"I'm not talking about them dating. An unrequited crush never goes away, and now she's old enough and Steve's available, I thought she could get it out of her system."
This time, knife in hand, Kim turned to face her mother. "Are you trying to pimp Charlotte out to Steve, or use Steve as a gigolo to lure her away from Brad?"
Christine looked at her daughter and then the knife. "It's not like Charlotte and Brad are engaged, and I just thought it might help Steve out of the fug he's in."
"Have you seen Steve?" asked Kim in the knowledge he was far from stuck in a fug.
"No, but I will, come Saturday."
"So you'll risk spoiling Aunt Jackie's party by trying to set Steve and Charlotte up, and in front of her boyfriend."
"I doubt Brad will be there. He never came to my birthday party."
"They weren't dating then," Kim pointed out.
"They may not have been dating, but Brad was sniffing around your sister long before."
Kim sighed. "Just promise me you won't fuck up the party."
"I promise," replied Christine.
Kim returned to cooking and decided, should her mother have a change of mind, she'd have to warn Steve ahead of the party.
For her part, Christine set about modifying her plan.
After eating, Kim excused herself to her room. Lying on the bed, she typed a heads-up message for Steve. Her finger hovered over the send icon. What if Steve replied? What if they got into a lengthy back and forth? And would her aunt wonder who was texting her son?
'I'll send it in the morning,' she thought to herself. 'That way he'll be too busy to get into a conversation and her aunt would be less likely to take notice.'
...
It was seven-fifteen the next morning when Steve's internal body clock woke him. He was snuggled into his mother's back, his right arm trapped under her body and his left draped over to where the hand had slid inside her nightgown and was cupping a breast. His turgid erection, nestled into the cleft of his mother's bare ass, completed the picture.
Steve's stretched and his cock pushed deeper into the cleft.
"Is that you, Steve?" asked Jackie.
"And who else might it be?"
"I wasn't sure, but for the last fifteen minutes, someone's been making a half assed attempt at sticking their cock in my pussy."
"And why wouldn't that be me."
"Because the son I know would be doing a better job of it."
"In my defense, I was asleep," Steve replied.
"Are you still asleep?"
"No."
"Well, your dream fueled humping has got me hot-to-trot. So get that fat cock in me now and do the job properly."
Not wishing to remove the hand from her tit, Steve withdrew the one from under her waist, pulled back his hip, then positioned his cock against his mother's moist cunt lips and eased forward.
Jackie was indeed hot-to-trot. She felt the head of her son's cock slide through the slick opening of her vagina, then glide it's way in until his hips met the buffer of her ass cheeks.
Bending her body forward allowed Steve to push that extra inch or two inside, and Jackie smiled to herself at how well her son's cock filled her cunt. When she began to hump, Steve added his own motion but his mother stopped him with her hand.
"Let me, Steve. All that fucking you gave Kim has probably worn you out."
"And what about you being worn out from everything you did with Aunt Christine?"
"As it was my birthday she did most of the work."
"As did Kim with me," replied Steve.
"All the same, just let me do this."
Steve realised his mother may be trying to prove her stamina was as good as his, so conceded the point and lay still.
Jackie began to fuck herself on her son's cock at a slow and steady pace, but Imagining her niece riding the very same cock soon had her humping all the faster and was grateful when Steve took hold of her hips and joined in.
With perfect timing, Steve's forward slams were met by his mother's backwards thrusts, allowing the head of his cock to bang against the entrance to her womb.
When they came as one, Steve matched his thrusts to his spurts, depositing gobs of seed right into her baby-making chamber.