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 10 continues the adventures of Mark, Mandy and other characters. The Wheeler's and Nielsen's meet again.
*****
After more than an hour of playing with his mom's tits, Mark was too turned on to stay watching the TV for long after his dad had gone to bed, so only a few minutes passed before the horny boy ushered his mom upstairs.
"This is awesome," said Mark as his mom slid into bed beside him. "Finally, a weekend where I don't have to swap back with Dad."
"It's just a one-off for the moment, Mark," Mandy reminded him. "Your dad is still an important third of this family, in case you had forgotten!"
"I know," Mark acknowledged with a roll of his eyes. "You don't need to keep reminding me. But what about earlier?! Dad got to see me feeling your tits!"
"Didn't I keep telling you that you need to trust me? I think you impressed your dad with the progress you are making. Don't you feel he has more respect for you now that you're doing more grown-up things?"
"Yeah, that's what I want. And there's so much more that I want him to see me do with you, Mom!" said Mark, pressing himself up close to his mom's nude body as his hands wandered over her curves.
"You boys never take the time to enjoy the things you do have," replied Mandy, shaking her head. Nevertheless, she couldn't help but smile at Mark's infectious positivity. "You are always thinking about the next thing!"
"I thought it was good to be ambitious and to have goals?" Mark asked, one hand now between her legs and cupping her shaved cunt. Sometimes his good fortune almost felt unreal to the teen. In a matter of months, he'd gone from spending lonely nights jerking off in his bed, to having his mom's pussy in the palm of his hand. It sent a thrill through his young body, knowing it belonged to him now! His only regret was that his mom had not told him sooner that sons had important rights in the bedroom, just like their fathers.
"That's true but you're also meant to learn more life skills from SAMBA. Things like patience and the rewards of hard work. It's not all about sex, you know."
Mandy had been about to say more, having a whole speech in her head about how their bonding sessions were only a means to ensure Mark's well-being and future happiness. But it was not to be. As Mandy drew in a breath and opened her mouth to continue, Mark's lips met hers, while down below his young fingers fondled her other, fatter lips.
Mandy was almost ashamed of how easily she surrendered to her son, but her earlier arousal from all the breast play, plus her Mark's hand on her pussy was too much for her motherly resolve. As she moaned into his mouth Mandy thought even moms deserved a little time to feel good and recharge their batteries. And Mark had a certain way of filling her up that she'd become increasingly dependent on.
Soon Mark's penis swelled up against his mom's thigh and he broke away, twisting his head about, his eyes searching the bedside table.
"What are you looking for?" Mandy asked.
"We need the lube, Mom."
"Uh-uh, young man, not tonight. Remember I'll be with Steve tomorrow night and I'll need to be able to take his thick cock."
"But, Mom!" Mark protested, disappointment showing on his face.
Mandy spread her legs wide and arched her back. Her big, wet clam split open. "Please, baby. Mommy needs it so bad in her pussy. Don't you want to show me how it belongs to you too?"
For the first time in many weeks, all thoughts of his mom's big, round ass were dispelled from his mind. The tight and slippery maternal pussy looked as inviting as that first time at the academy. With his mom on her back, Mark swiftly mounted her, his cock slipping easily into her juicy vagina. Once he was fully inserted, Mandy clamped down on him with her powerful muscles and Mark groaned.
Though Mark usually preferred the view from behind when he pounded his mom up her rear chute, on this occasion he felt an incredible power as he hunched over his mother who had spread her sex wide, just for him. After a dozen or so thrusts he was slamming his mom hard with an animal urgency, watching her big tits fly about on her chest with wide-eyed boyish joy.
Their incestuous fuck was short, but what it lacked in duration it made up for in raw energy. Together they worked their hips, mother and son making the bed bang and thump with their exertions.
"Mark! Sweetheart!" Mandy cried. "Force that dick of yours as deep as it'll go!" This is how moms and their boys show their love, she thought; pitying those moms who held back from real intimacy.
"Ah, fuck! Squeeze that pussy, Mom! Squeeze it!" Mark gasped as his mom strained and grimaced to fulfil his request.
Never had Mandy ever grunted and clenched so hard in her love-making with her husband. And never had her clit and labia felt so plumped up and engorged. Even during the peak of sexual ecstasy, she knew this was different. What she was doing with Mark was the most important thing in her life and went way beyond her marital duties. Her body knew the difference; making her wetter, hotter and tighter to draw out every drop of her son's potent sperm.
"My Mark! Come with me! Please!" begged Mandy with a passion she'd never known. Her marriage and husband were forgotten - only the natural, healthy yearning for Mark's youthful seed to flood her womb remained.
