This work is inspired by the stories 'BTSC' and 'Room 209' by the author 'klrxo'. Also thrown in are elements of the many mom/son stories I've read over the last 25 or so years.
It started out as my own spin on the above stories, but soon took on a life of its own. Too big for one single story, so split over a series.
It should be obvious, but this story isn't a stand-alone. Please read the other parts before this one.
Part 9 continues the adventures of Mark, Mandy and other characters. Mark gets a new toy and Mandy pushes the boundaries of home education.
*****
Dan Wheeler had lain in bed with his door open a crack, waiting until he had heard his wife and son go to bed. He was annoyed with himself because he would have his usual early start for work and should be asleep by now. But some strange excitement had kept him awake.
Dan gave it five minutes and then crept out of bed and over to his door, crouching with his ear to the gap. Dan told himself that all he wanted to do was check that everything was alright with the co-sleeping and that Mark was getting what he needed out of it.
The senior Wheeler was feeling almost excited on his son's behalf, having given Mark permission to look at his wife's boobs. It would be a thrill for the teen to have his first proper look while he beat off, and in Dan's mind, this was preferable to his son surfing the internet for all the filth he would find there.
For a while, all Dan heard were the usual sounds of a house at night as people got ready for bed - running water - a door or cabinet being shut - and quiet footfalls. Then he heard the mumble of voices. It was far too muffled to make out anything and after a while, Dan got bored and was about to return to his bed when he stopped.
Movement - a creak of bed springs - more softly spoken words. Then what Dan had been hoping for - a rhythmic beat as the Wheeler marital bed bumped against the wall.
Dan grinned to himself. Yes, this was it. Mark was jerking off getting a good look at his mother's incredible breasts. As his poor, needy son had no girlfriend this was surely the least he and his wife could do to help Mark get by.
Dan still couldn't make out any of the occasional words that were exchanged as he listened intently in the dark for the next five minutes. The creak and bump sped up inexorably, as before astounding Dan with how his son could make a bed shake so much during his masturbation until he heard his son cry out and all movement then ceased.
Dan felt relief and a sudden tiredness, as though he had himself just come. Then he was also struck by a wave of guilt for intruding on what should have been a private moment. He snuck back to his bed, his mind reeling with a confusing mix of emotions. As he drifted off to sleep his last thoughts were of pride that he as a father had enabled his son to have a safe and secure place with his mother where he could overcome all of his teenage difficulties.
*****
"Thanks for arranging for me to have bonding time with your mom," said Ryan to Mark as they met up over lunch break.
"What did you do to her boobs?" asked Mark with a frown.
"Huh?"
"They had bite marks, dude," Mark explained.
"Oh...well you did that too," Ryan pointed out, shrugging.
"Hey! It's my mom! I can do that if I want," replied Mark indignantly and a little too loudly, before controlling himself and lowering his voice. "Just show a bit more respect next time, alright?"
"I'm sorry, Mark. I couldn't help it - they looked so good - and your mom didn't try to stop me."
"Mom's good like that. She probably wants you to feel like you've got a real mom of your own to do SAMBA with."
"It does feel nice to have a mom again," said Ryan, understating in his characteristic way just how profound the experience had been.
"I bet it does. Once you get to see all the advantages you never see them the same way again. Having a SAMBA mom is the best thing ever. I hear she showed you her pussy, is that right?" Mark asked casually, but he also wanted to check that his mom was being honest about exactly what she was doing with his friend.
This last reminder broke Ryan's normally emotionally flat demeanor. To his teenage mind gazing upon Mrs Wheeler's cunt had been akin to a religious experience. "Oh my God, Mark! It was beyond beautiful! I never thought that I'd get the chance!"
"It's what we're owed after all those years of waiting, huh?"
"And it was shaved too!" Ryan carried on excitedly. "You'd never know she was forty years old!"
"Shh! Keep your voice down," cautioned Mark, looking around. "We need to keep this quiet if you're going to keep seeing my mom. What about her asshole? You take a look at that?"
Ryan nodded. "I didn't think I'd want to look at a mom's asshole, but I'm sure glad I did! It's kind of small and neat looking." He then asked hesitantly, "Is...is it true you do it up your mom's butt?"
"Of course, all of the time," said Mark confidently. "Why wouldn't I? It's the best thing about having a mom."
Ryan didn't look convinced. "But isn't it dirty?"
"It's not that bad. But who cares about that?" Mark chuckled. He got out his phone and found the photos he had taken the night before, just after he'd fucked his mom's ass. "Take a look at this!"
"Is that...?" Ryan asked, his eyes widening.
"Yeah, last night. Mom and me had a great time in bed and I came hard up her ass. You can see her butthole hasn't completely closed up in that shot. Don't you love how wet it still looks?" Mark grinned.
Ryan stared at the photos, intrigued. He'd not even fucked a cunt yet, having only just seen a real one the day before and now he was seeing an anus after it had been used for a mom-son bonding session. The close-up flash photo captured every detail. The slightly irregular, almost circular asshole looked relaxed though a touch reddened. Its edges appeared to be coated in a clear layer that glistened in the light. Even some of the interior was revealed - a dark, shadowy pink passage wet with lube and sperm.
"You know, I was doubtful too, at first. Back at the academy, I didn't believe anything could feel better than coming in Mom's pussy. Boy, was I wrong!" said Mark, shaking his head in disbelief at his earlier innocence.
"Doesn't it hurt your mom?" Ryan asked with concern but was unable to tear his eyes away from Mark's phone. The anus and the passage beyond in the photos looked so well used it was difficult to believe it had been easy for Mrs Wheeler. He tried to imagine the mature mom all hot and sweaty as a hard cock thrust in and out of her rear opening.