This is based on the story "My Mom is a Slut" by darkride (with the author's permission). Early chapters are very similar to theirs, before a major shift around chapter 8.
This is also quite a long series, at about 90,000 words right now, so it's a pretty slow start (you've been warned).
Chapter 1
Steven sat at the table, pretending to play with his phone, waiting for the 'family meeting' to happen. His leg bounced under the table, his nerves evident. There had never been a family meeting before, and Steven was worried about what could be so important. He looked over to his parents standing near the sliding door to the backyard. His father Aaron was gently rubbing his mother's, Maryanne's back, both of them checking and rechecking the phone in Maryanne's hand, looking nervous and occasionally glancing back up at Steven.
Aaron yelled out once again toward the back of the house, "Come on Sandy! We're starting."
Steven's twin sister Sandy yelled back, "Almost done!"
Steven looked up once again at his parents. His mother was a beautiful woman, 39 years old, 5'6" tall, with dark red hair, currently tied back in a ponytail. For most of Steven's life, he'd have just called her an average mom, neither hot nor ugly, neither fat nor thin, just very average, but suddenly about two years ago his parents got into a massive health kick, working out at least an hour a day. And since they have a pool in their backyard he could see how effective it had been. The first day they opened the pool this summer, Maryanne had come out in a thong bikini that was smaller than Steven would have ever thought his mother would ever wear around him. Her stomach was narrow and flat, her ass was nearly perfect, and her breasts seemed firmer and larger than he'd ever remembered, like a C-cup. If one were to look closely you could see some small stretch marks, some small crow's feet, a little cellulite, but one had to have looked very closely. From just a little distance away one could confuse her for someone 10 years younger.
His father was similar at 40 years old, 5'10" tall, with black hair, once salt and pepper. When he came out with his wife in her bikini, he was almost as surprising as their mother, he wore a small swimsuit, similar to the Casino Royale Bond suit. And since he seemed to do the exact exercises as his wife, he had little muscle mass, except for a healthy butt, a flat stomach, and small legs and arms. But the most surprising part about him was he was completely hairless, with no arm, leg, or even back hair. He even shaves his face daily, even when he's off work. It was strange to Steven, but he didn't really have a good reason to bring it up, especially since it also made his father look younger. As a couple together, they looked more like 30-year-old yuppies, rather than 40-year-old parents of adult twins.
Steven and his sister Sandy looked very similar when they were young, they grew up with dark red hair like their mother, and Steven's face looked so much like his sister's that most of the time people thought they were twin girls. Luckily, when they hit puberty they finally started to look different. Sandy's hair got lighter, a soft red, whereas Steven's darkened, to brown. Sandy stopped growing at 5'2", and Steven shot up to almost 6'0". Unfortunately, his face stayed 'pretty', which caused problems with bullies but helped with girls. They both stayed in great shape; Sandy did gymnastics until she was 15 when she moved to cheerleading. She had the perfect body for both sports, petite, strong, small breasts; she's a small firecracker. Whereas, Steven did cross country, swimming, and track. So, he was toned, but with small muscles, tall and thin, he kind of looked similar to his father's current frame. They had both turned 18 about six months ago.
Just as Steven turned back to his phone, Sandy bounced in and plopped on the chair at the end of the table, "Okay, what's this about?" Sandy asked quickly. Steven put away his phone and also stared at his parents. They looked at each other once again, both took deep breaths and stepped forward toward the table.
Maryanne started, "The reason we called this meeting is that we have to tell you something important. And it's going to be shocking and will likely change your lives."
Steven asked sadly, "Are you getting divorced?"
"No!" Aaron and Maryanne answered quickly together. Then Aaron continued, "No, this is about what we've been doing nearly every weekend." Steven looked at Sandy and smirked. They had so many theories about how their parents' lives had been different over the last two years.
Maryanne took over, "You're both adults now, and we..." She stopped, not sure how to get to the point, even though she practiced this a dozen times, but looking at her own children's faces, she faltered. "we've been experimenting. Sexually."
"TMI!" Sandy shouted.
"Sandy!" Aaron admonished, his face blushing. "Please. Just try to keep an open mind. There have been some things we couldn't do on our own..."
"You're having sex with other men." She looked directly at her mother. "You're fucking other men!?"
Maryanne reacted instinctively, correcting her daughter. "Language, Sandy!"
Aaron tried to take the conversation back from Sandy. "Yes, but it's not that... "
Sandy loudly pushed her chair out from the table and yelled "You Slut!" at her mother with as much venom as she could, and ran from the room.
"I'll go," Aaron said following his daughter.
Maryanne quickly wiped a tear from her eye, before she turned back to Steven with a wry smile. "That could have gone better..." she said to her son. "Are you okay, Steven? I know this was a huge bombshell for us to drop on you."
"Yeah. But at least it's not divorce," he said smiling at his mother. She smirked back.
-
Sandy ran back to her room, slammed the door, and flung herself onto the bed, weeping into her pillow. After only a few seconds a light quick knock came on the door, with it opening quickly after. "You owe your mom an apology, young lady," Aaron said sitting on the edge of the bed.
"She's fucking other men, and I owe her the apology?" Sandy practically spat into her pillow.
"Sandy, you're being childish. And, you need to understand the situation before you call your mother names." Aaron said, patting his daughter's back. "There's an expression in this lifestyle... It's not cheating if your partner is encouraging you... This wasn't your mom's idea, not by a long shot." Sandy's eyes peeped out from the pillow.
"What? You wanted her to...?" the teen's voice trailed off as she quietly contemplated the concept that her father had wanted to see her mother have sex with another man.
"Would you please come back out so we can explain things to both you and Steven? There is so much more..." He left it hanging. "And please apologize to your mother."
"Fine," Sandy said wiping a tear from her eye, getting up, and following her father back out to the kitchen.
-
Steven and his mother looked up at Sandy and his father, who had walked back in and taken seats at the table. "I'm sorry for what I said, Mom," Sandy said.
"It's alright, honey. This is heavy stuff, but there is so much more. I hope you'll hear us out fully," Maryanne said, squeezing her daughter's hand. "Did you tell her about Nathan?" she asked her husband.
