Fomo
Copyright© 2026 by Big Ed Magusson
Chapter 15
Incest Sex Story: Chapter 15 - 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
They soaked a little longer, though didn’t talk about anything of consequence. Under the water, Finn lightly stroked his fingertips up and down MacKenzie’s thigh. He sensed her relax and shift, though subtly enough that he wasn’t sure her mom noticed. After a bit, she placed her own hand on his thigh. She just held it there, lightly, but that didn’t prevent his cock from starting to stir.
“I think I’ve soaked enough,’ Ms. O’Connell announced.
“Would you like a show tonight?” Finn asked.
She paused but then nodded. “That sounds nice.”
“Then I think we’re all done soaking.”
Ms. O’Connell chuckled. “Let’s go.”
Once again, Finn tried not to stare as they got out of the tub. It was hard not to—Ms. O’Connell had an amazing body for a woman in her forties. Yeah, her stomach wasn’t as flat as it probably had been, and her boobs sagged, but she was still hot.
The three dried off and headed inside.
“Where do you want to do this?” Ms. O’Connell asked.
“How about the family room?” They had more control of the lighting there.
She nodded. “Put some dry towels down on the couch.”
“Of course.”
He and MacKenzie did so, and then he gestured for MacKenzie to sit on one side. She cocked her head, asking him a silent question.
“I want to go down on you first.”
“Oh.” She then looked at her mom, who just smiled.
As Finn sank to his knees in front of his girlfriend, Ms. O’Connell settled onto the couch next to her. She wasn’t close enough to accidentally touch, and she swiveled so her back was against the arm and she could watch more easily. It had the side effect, to Finn’s disappointment, of blocking the view of her pussy with her thigh.
But the momentary disappointment was immediately replaced by a rush of adrenaline. MacKenzie’s mom was here! Naked! Watching!
Which meant he needed to give her something to watch.
He kissed the inside of MacKenzie’s right thigh, just above the knee. Then he did the same to the left, at the same spot. Alternating between her legs, he slowly kissed his way up. When he reached the crease with her torso, he feathered several kisses on each side.
She squirmed with pleasure.
He quickly glanced at her mom. She was watching intently. Their eyes met and she smiled.
Finn kissed MacKenzie’s mound, and then her clit. Then he started to lick.
She gasped and swiveled her hips as he did. He licked and sucked and kissed until her juices covered his face. She gasped again when he brought a hand up and slid a finger inside her. He focused solely on her pleasure.
He kissed and licked and caressed her inner walls. When she wiggled her hips, he used his free hand to hold her steady. Her gasps and moans steadily grew. He wanted to look over at Ms. O’Connell but he resisted. MacKenzie needed to come first.
After another few minutes, she did. With a shriek, she shook and her pussy clenched around his finger. He eased off her clit, knowing she’d be too sensitive. Then he leaned back on his haunches and looked up at her.
MacKenzie gave him a loopy, blissful smile. Her chest was flushed and a sheen of sweat covered her torso. She slowly caught her breath.
Ms. O’Connell grinned. She’d shifted so she could lean against the couch arm and had one hand between her thighs. From the position of her arm and wrist, she was clearly playing with herself, even though Finn couldn’t specifically what she was doing.
“Ready for more?” Finn asked.
“More oral?” Ms. O’Connell asked.
“No.” He shook his head before rising up on his knees. Then he smiled at MacKenzie. “Scoot closer to the edge.”
She did, and he pushed her thighs further apart. Then he knee-walked forward until the crown of his hard dick touched her pussy.
“You want to watch this?” he asked Ms. O’Connell.
She shifted so her head was next to MacKenzie’s shoulder.
Then he slowly pushed himself in. Her labia parted and spread as he did, almost obscenely framing his thick shaft.
MacKenzie sucked in her breath. Her mom’s eyes widened.
He kept moving until his hips met MacKenzie’s and he was as deep as he could go.
His cock twitched. The heat of her pussy bathed him and almost coaxed an immediate orgasm from him. He held still until the wave of desire subsided. Then he began to slowly stroke in and out.
MacKenzie softly moaned and began playing with her breasts. Her mom watched, eyes wide, an entranced smile on her face. Her hand moved between her thighs.
He held MacKenzie’s thighs as he screwed her with long, steady strokes. The heat grew and the pleasure flowed up his own spine as her breathing grew more ragged.
“Rub your clit,” he said.
She nodded and began doing just that.
Ms. O’Connell’s own breathing grew ragged. Her nipples stood achingly stiff while her hand moved furiously fast.
MacKenzie came first, with a shriek and an arch of her back. Her mom and Finn quickly followed, her mom with a gasp and a quick pitch forward. Her head brushed MacKenzie’s shoulder.
Finn just exploded. Waves of pleasure flooded him as he shot stream after stream into his girlfriend’s pussy.
His legs turned to jelly and he braced himself on the sofa. As he caught his breath, his cock still inside MacKenzie, he smiled at the two women.
“How was that?” he asked.
“Amazing.” Ms. O’Connell said with a huge, happy grin.
MacKenzie nodded and gave them both a similar loopy, satisfied smile.
The three of them sat there naked, sweaty, and happily satisfied. After a bit, Finn’s dick softened and he pulled out. MacKenzie then hopped up to go to the bathroom. Her mother watched her go. Then instead of kneeling on the floor, Finn moved to the couch and sat where his girlfriend had been. He smiled at Ms. O’Connell.
“Thanks,” he said.
“For what?”
“This.” He gestured at their naked bodies. “You here? It was really good.”
She chuckled. “I can’t believe I did this.” Then her gaze flicked down her own naked body before over to his. It lingered on his half-hard dick.
“We’ll go for round two when Mac gets back,” he said.
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