Fomo
Copyright© 2026 by Big Ed Magusson
Chapter 18
Incest Sex Story: Chapter 18 - They’re afraid of missing out… maybe Mom can help. Finn and MacKenzie have been together since they were thirteen. They both wonder what it’d be like to be with other people but they don’t want to damage their relationship. Maybe Mom has some advice… A taboo novel about creative ways to avoid the Fear Of Missing Out.
Caution: This Incest Sex Story contains strong sexual content, including Ma/Fa Fa/Fa Incest Mother Daughter
Finn’s jaw dropped as he watched his girlfriend lick her mother’s juices off of the vibrator. There couldn’t be much there, but still. It was hot and obscene at the same time. She only took a couple of licks, though, before lowering the toy and placing the tip of it against her clit.
He gasped. He could feel the strong vibrations in his cock even without the toy touching him directly. It felt good. Really good.
Almost too good.
In fact—
With a strangled cry, he started coming. He saw white and clenched MacKenzie’s hips tight. Then he thrust up as hard as he could.
MacKenzie moaned and shook as she joined him. She pitched forward and almost off his cock. He held on tight as they both writhed in pleasure.
Finally she collapsed forward so much he had to let go. She pulled off his lap and slumped to the floor.
In her own chair, Ms. O’Connell leaned back with a weary, wide grin. One hand idly stroked her inner thigh as the flush on her chest began to fade.
Finn’s cock felt sore and sensitive. When he shifted in his seat, it took more energy than he’d expected.
Slowly, MacKenzie shifted until she was sitting on the floor with her back resting against his legs. She gave him a brief smile before looking at her mom.
“How was that?”
“Amazing,” Ms. O’Connell said. “If I smoked, I’d want a cigarette.”
“I want a nap,” Finn joked.
“That’s a great idea.” Ms. O’Connell eased herself to her feet. “I’m going to call it a night. Thank you for a wonderful evening.”
Finn nodded. Ms. O’Connell smiled and then left the room.
MacKenzie rolled her stockings off while he cleaned up the rest of the room. Ms. O’Connell hadn’t reclaimed the vibrator, so he took it to the bathroom and washed it off. He was drying it off when MacKenzie, still nude, came up beside him. She wrapped her arms around him in a big hug.
“I wish you could stay,” she said.
“Me, too.” He put his arm on top of her and squeezed her back. “Maybe I can talk to my parents.”
“That’d be nice. I never get to wake up with you.”
“Yeah.” He nodded in sympathy. “But ... how about if I come back early? If you’re still in bed, I could join you.”
She smiled. Then she pulled the vibrator from his hands.
“Hey!”
She gave him a quick kiss on the cheek. “I’ll need it if you’re late.”
He laughed. “I won’t be.”
“Good. Because the real thing’s better.”
He pulled her into his arms for a deep kiss. When they parted, they looked into each other’s eyes.
“I love you,” he said.
“I love you, too.” She pulled back smiling. “Now get going so you can come back.”
Finn had to wait for his mom the next morning before he could head over to MacKenzie’s. She hinted that she really wasn’t seeing enough of him this summer so he suggested that maybe they could hang out at his house before they went to work at the pool. Mom didn’t love the idea because Dad would be at work. She was mollified when he promised that he and MacKenzie would spend most of the next weekend hanging out with his family.
So when he arrived at MacKenzie’s, he wasn’t entirely surprised to find Ms. O’Connell in the kitchen. She sat at the table in her PJs sipping coffee and smiled tiredly at him when he walked in.
“Good morning!” he said cheerily.
“You’re way too chipper,” she shot back.
“I had a great evening.”
She smirked. “I’ll bet.”
“Didn’t you?”
“Oh, I did...” She nodded toward the chair across from her.
“I’m, uh ... supposed to go wake Mac up.”
“This won’t take long.”
She’d used her parent voice, so he sank quietly into the chair she’d indicated.
“I’ve been thinking about last night.” When she saw him stiffen, she quickly added, “not bad thoughts. Just ... thoughts.”
“Okay...”
She smiled reassuringly. “Really, it’s not bad. I had a great time. But ... well ... one thing. You should probably start calling me ‘Jenny.’ At least when we’re, you know...”
He chuckled. “Yeah, it sounded weird to me, too.”
She grinned. “Yeah. It makes me feel old.”
“And you’re not. Really. At least you don’t look it.”
“Flatterer.” But her smile grew.
He shrugged and grinned back.
“So, Jenny, what else?”
“You need to get Mac her own vibrator.”
“Oh, um, okay.” His mind flashed to the memory of MacKenzie licking her mom’s juices off the toy. Had that freaked Ms.—Jenny—out?
“It’s not that I don’t mind her using mine...” She rolled her eyes in amusement. “But then I can’t use it.”
“Ah. So you like having it when you watch.”
She let out a deep sigh that blended exasperation and amusement.
“This is crazy—what we’re doing—I mean, I’m old enough to be your mother! I’m literally Mac’s mother! But...”
He nodded to encourage her to go on.
“But...” she said.
“But ... it’s really good?”
She snorted with laughter. “Yeah. Last night—and not just the end, but the whole night—was the hottest and sexiest I’ve had in twenty years.” She chuckled ruefully. “Maybe ever.”
“It was really hot for us, too,” he reassured.
“Yeah ... I just ... well, I just can’t believe I’m getting off watching my daughter and her boyfriend have sex.”
“Yeah, well, we like it a lot, too.”
“Yeah ... well...” She sighed. “Sometimes it feels ... perverted.”
He shrugged. “We’ve talked about it before. We’re not hurting anybody.”
“No.”
“And we’re all adults.”
“Barely.” She grinned at him.
“Good enough,” he shot back.
They fell silent for a moment. Jenny sipped her coffee.
“So...,” Finn asked. “Was there anything else?”
“Mmm ... I really liked going out. Not just the show—which was great—but the rest of it. Getting dressed up. Everything.”
He grinned. “Yeah. When Mac wears her lingerie—wow.”
“Mmm hmm.” Jenny smirked. Then she checked the clock. “But you were going to wake her up and I promised this would be short.”
He pushed back and stood. “You’re welcome to come watch.”
“I want to finish my coffee.”
“Well, the offer’s open.”
She smiled and took a sip.