Relative Pleasures
Copyright© 2026 by Obscene Vices
Chapter 8: Come Over
Incest Sex Story: Chapter 8: Come Over - In the Davidsons' perfect suburban life, Jenny and her sister Mandy have been secret lovers since teens, sharing boyfriends and now their husbands. One night, with the kids supposedly out, the adults start an orgy in the living room. John and Emma return early from a busted party, witness the incestuous scene, and sneak upstairs. Shocked but aroused, they confess desires and have sex, fantasizing about joining the family depravity. No one is safe from the family taboo.
Caution: This Incest Sex Story contains strong sexual content, including Ma/Fa Fa/Fa Consensual Lesbian Heterosexual Fiction Sharing Slut Wife Wife Watching Incest Mother Son Brother Sister Father Daughter Cousins Uncle Niece Aunt Nephew InLaws Gang Bang Group Sex Orgy Swinging Anal Sex Analingus Double Penetration First Facial Masturbation Oral Sex Sex Toys Voyeurism
The bedroom door opened, and John walked in.
He was wearing shorts and nothing else. He stopped just inside the doorway, taking in the scene. His mother, naked on the bed, was propped up on one elbow. And beside her, his Aunt Mandy. Also naked. Clutching a pillow against her chest like a shield, her eyes wide, her face flushed crimson.
“Hi, Aunt Mandy,” John said.
His voice was calm. Easy. A twenty-year-old walking into his mother’s bedroom and finding his naked aunt shouldn’t have sounded that relaxed. But this was John, Emma’s brother. Jenny’s son. The son who had already fucked his mother.
“John—I—” Mandy looked at Jenny with something between panic and desire. “Jenny, you didn’t tell me—”
“I told you I had a surprise.” Jenny sat up and swung her legs off the bed. She crossed the room to her son, naked and unhurried, and put her hands on his chest. She looked back over her shoulder at Mandy. “Watch.”
Then she dropped to her knees.
She hooked her fingers into the waistband of John’s shorts and pulled them down in one smooth motion. His cock sprang free, already half-hard, hanging thick and heavy between his thighs. Jenny wrapped her hand around it and looked up at her son.
“Good morning again, baby.”
“Morning again, Mom.”
Jenny took him into her mouth. Right there. Three feet from the bed where her sister sat frozen, watching. She sucked her son’s cock with the easy, practiced confidence of a woman who had done this before and loved it. Her head bobbed slowly, her tongue working the underside, her hand stroking what her mouth couldn’t reach. John’s hand found her hair, and he groaned.
Mandy couldn’t look away. The pillow had dropped to her lap. Her lips were parted. She was watching her sister—her beautiful, insane, fearless sister—on her knees, sucking her own son’s cock like it was the most natural thing in the world.
And it looked natural. That was the thing that hit Mandy hardest. There was no performance in it, no awkwardness, no shame. Jenny was enjoying herself. John was enjoying himself. They looked like lovers.
Because they were.
Jenny pulled off with a wet pop and stroked him lazily, looking back at Mandy. “See? Nothing to be scared of.” She grinned. “Now come here.”
“Jenny, I don’t—”
“You told me you wanted this. You told me while you were coming on my face. Did I get that wrong?”
“No.”
“Then come here.”
Mandy set the pillow aside. She moved to the edge of the bed, her legs hanging off, and Jenny stood and took her hand. She pulled Mandy to her feet so they were standing face-to-face, John behind Jenny, his hard cock pressed against his mother’s back.
Jenny kissed her sister. Softly at first. A reassurance kiss. Mandy’s hands came to Jenny’s waist, and Jenny deepened it, her tongue sliding into Mandy’s mouth. When she felt Mandy relax into it, she broke the kiss and stepped aside, leaving Mandy face-to-face with John.
They looked at each other. Aunt and nephew. Naked woman and naked young man. The gap between them was less than a foot.
“Hi,” John said again. Softer this time.
“Hi,” Mandy whispered.
“You’re beautiful, Aunt Mandy. You’ve always been beautiful.”
Mandy’s eyes glistened. “John—”
“Kiss her,” Jenny said from beside them. Not a command. An invitation.
John leaned in. Mandy tilted her face up. And they kissed.
It started tentatively. Closed mouths, gentle pressure, testing. Then Mandy made a sound in her throat, and her mouth opened. John’s tongue found hers, and the kiss deepened. His hands came to her waist, and her hands came to his chest, and they kissed the way people kiss when a dam breaks.
Jenny watched them. Her son kissing her sister. Her hand drifted between her own legs, fingers sliding through wet folds. She was dripping. This was the hottest thing she’d ever seen, and she’d seen a lot in the last forty-eight hours.
“Touch him,” Jenny murmured. “Touch his cock, Mandy.”
Mandy’s hand slid down John’s stomach. Her fingers found his shaft and wrapped around it. She gasped against his mouth.
“Oh, my God. Jenny—you weren’t exaggerating.”
“Told you.”
Mandy stroked him slowly, feeling the weight and thickness of him, her fingers not quite meeting around his girth. John groaned into the kiss, his hips pushing forward.
“Taste him,” Jenny said.
Mandy sank to her knees. She held John’s cock in both hands and looked at it—really looked at it—the way a woman looks at something she’s been fantasizing about. Then she opened her mouth and took him in.
“Oh, fuck,” John breathed.
Mandy sucked her nephew’s cock. She was good at it—Jenny knew she was good at it; she had watched her do it to Mark and Bob and many others dozens of times. She took him deep, her cheeks hollowing, her tongue working, her hand twisting at the base. John’s head fell back.
Jenny knelt beside her sister. She leaned in and licked John’s shaft while Mandy sucked the head, their tongues meeting along the length of it. Mother and aunt, side by side on their knees, sharing his cock. They passed him back and forth—Mandy taking him deep, then Jenny, then both of them licking him together, their tongues sliding against each other as much as against him.
“Jesus Christ,” John managed. “You two are going to kill me.”
“Not yet,” Jenny said. She stood and pulled Mandy up with her. “Let’s get comfortable.”
They tumbled onto the mattress together. Jenny pushed John onto his back and straddled him, reaching between her legs to guide his cock inside her. She sank down onto him with a long, low moan, her eyes closing, her hands on his chest.
“Oh God, yes,” she breathed. “I needed this. I’ve needed this cock all morning.”
She rode him slowly at first, rolling her hips, feeling every inch of her son inside her. This wasn’t a demonstration anymore. This was Jenny fucking her son because she wanted to, because she’d been wet and aching since the blowjob that morning, because his cock felt like it was made for her.
“Watch us,” Jenny said to Mandy, her voice thick with pleasure. “Watch me fuck my son.”
Mandy was lying beside them, propped on one elbow, her hand between her own legs. She watched Jenny rise and fall on John’s cock, watched the way Jenny’s face transformed—the way her mouth fell open, the way her brows drew together, the way her whole body flushed. She watched John’s hands grip Jenny’s hips, pulling her down onto him harder.
“You look incredible,” Mandy whispered. “Both of you.”
“Come here,” Jenny gasped. “Sit on his face. He knows how to use his tongue.”
Mandy hesitated for only a second. Then she swung her leg over John’s head and lowered herself onto his mouth. John’s hands left Jenny’s hips and gripped Mandy’s thighs, and his tongue found her pussy, and Mandy cried out.
“Oh—oh God—John—”
The two sisters were facing each other now. Jenny riding John’s cock, Mandy riding John’s face. Their eyes met, and Jenny grabbed Mandy’s face with both hands and kissed her hard.
“He’s so good with his tongue,” Mandy moaned into the kiss. “Oh fuck, Jenny, he’s so good—”
“I know, baby. I know.” Jenny was bouncing on his cock now, her pace increasing. “And his cock—God, Mandy, you have no idea. Wait till he’s inside you.”
“I want it,” Mandy gasped, grinding against John’s mouth. “I want him inside me.”
“Soon. Let me have him a little longer.”
Jenny rode him harder, her orgasm building, the angle hitting her perfectly. John was licking Mandy’s pussy while his cock was buried in his mother, and the muffled sounds he was making vibrated against Mandy’s clit.
“Oh fuck—I’m coming—” Jenny slammed down on him and held herself there, grinding, her body shaking. “John—baby—I’m coming on your cock—”
She came with a shout, her pussy clenching around him, her nails digging into Mandy’s shoulders. Mandy held her through it, kissing her forehead, her cheeks, her mouth.
Jenny lifted off him, shaking, and collapsed onto the bed. “Your turn,” she panted. “Fuck him, Mandy. Fuck my son, your nephew.”
Mandy didn’t hesitate this time. She moved down John’s body and straddled him, reaching between her legs to find his cock. It was slippery with Jenny’s cum. She positioned him at her entrance and looked down at her nephew.
“Are you sure?” she asked.
John put his hands on her hips. “Never been surer, Aunt Mandy,”
Mandy sank onto him.
The sound she made was a moan that was pure pleasure and desire. Her mouth fell open, her eyes squeezed shut, and her hands braced against his stomach as she took him all the way in.
“Oh my God,” she whispered. “Oh my God, you’re so big. You’re so fucking beautifully good.”
“Take your time,” Jenny murmured from beside them, stroking Mandy’s back.
“I don’t want to take my time.” Mandy’s eyes opened, dark and wild. “I want to fuck him.”
She started moving. Slowly at first, adjusting, feeling the stretch. Then faster, her hips finding a rhythm, rising and falling on her nephew’s cock. John looked at her, not believing his good fortune. He was content being fucked by his aunt.
“That’s it,” Jenny said, her hand sliding down to play with Mandy’s clit while John fucked her. “That’s it, baby. Fuck him. Fuck my son.”
“He’s so deep,” Mandy gasped. “Jenny—he’s so deep inside me—”
“I know. He fills you up, doesn’t he?”
“Yes—fuck—yes—”
John sat up, wrapping his arms around Mandy, pulling her against his chest. They were face-to-face now, her legs wrapped around his waist, and he fucked her from below with deep, steady strokes. Mandy’s arms went around his neck, and she kissed him, moaning into his mouth with every thrust.
Jenny watched her sister and her son fuck each other. She lay on her side, her fingers working her own pussy, utterly mesmerized. Mandy’s face was the same as she fucked Bob and Mark.
“Turn her over,” Jenny told John. “Fuck her on her back. I want to see her face.”
John lifted Mandy and laid her down on the bed. Mandy protested when his cock left her pussy, but he spread her legs and pushed back inside her. Mandy arched, her breasts bouncing, her hands gripping the sheets.
“Look at me,” Jenny said, lying beside her sister, her face inches away. “Look at me while he fucks you.”
Mandy turned her head. Their eyes locked. Jenny’s hand came to Mandy’s breast, squeezing, pinching her nipple.
“How does it feel?” Jenny whispered.
“Amazing,” Mandy breathed. “He feels amazing.”
“Tell him.”
“John—fuck—you feel amazing—don’t stop—please don’t stop—”
John drove into her harder, his hips snapping, the bed creaking under them. Jenny leaned in and kissed Mandy, swallowing her moans. Then she moved to Mandy’s breast, sucking her nipple while her hand slid down to where John’s cock was disappearing into her sister’s pussy. She could feel him sliding in and out, feel Mandy stretched around him, feel the wet heat of them together. She pressed her fingers against Mandy’s clit.
“Come for him,” Jenny whispered against Mandy’s skin. “Come on my son’s cock, Mandy. Let him feel it.”
“I’m so close—right there—don’t stop, either of you—”
John fucked her harder. Jenny rubbed her clit faster. And Mandy came apart between them. She screamed, her back arching off the bed, her legs locking around John’s waist, her pussy clenching so hard that John groaned through clenched teeth.
“Fuck—Aunt Mandy—I’m going to come—”
“Inside her,” Jenny said. “Come inside my sister, baby.”
John buried himself to the hilt and came. Mandy felt him pulsing inside her, the hot flood of his cum filling her, and she came again, a second wave crashing over the first, her whole body shuddering.
They held still for a long moment. John’s forehead pressed against Mandy’s chest, his cock still twitching inside her. Mandy’s fingers were in his hair.
Jenny didn’t wait. The moment John pulled out, she was between Mandy’s legs. His cum was already leaking from her sister’s swollen pussy—thick and white against the flushed, pink skin. Jenny lowered her mouth and licked.
“Jenny—oh God—” Mandy was oversensitive, her thighs trembling, but Jenny held them apart and ate her. She licked John’s cum from Mandy’s pussy, sucking it out, her tongue pushing inside to get every drop. The taste was her son and her sister combined, and Jenny moaned against her, the flavor making her lightheaded.
When she’d cleaned her thoroughly, Jenny crawled up Mandy’s body and kissed her with a mouth full of cum. Mandy whimpered and kissed her back, tasting John on Jenny’s tongue, tasting herself, tasting all of it together. They passed it between them until it was gone.
John watched his mother and his aunt share his cum and thought, I’m the luckiest man alive.
They collapsed together. John in the middle, his aunt on one side, his mother on the other. Both women had a hand on his chest.
“I can’t believe that just happened,” Mandy said to the ceiling.
“Believe it,” Jenny said.
“I just fucked my nephew.”
“You did.”
“And he came inside me.”
“He did.”
“And you ate it out of me.”
“I certainly did. And it was delicious.”
Mandy turned her head to look at John. “And you. You just...”
“Fucked the two most beautiful women in the world?” John smiled. “Yeah. I’m aware.”
“Smooth talker,” Mandy said. But she was smiling. She looked down at his cock, soft now against his thigh, and shook her head. “I still can’t believe the size of that thing.”
“It runs in the family,” Jenny said. “Mark is gifted. John is more gifted.”
“Bob is going to be jealous.”
“I don’t think Bob cares as long as he puts his cock in a pussy. My pussy hopefully”
They were quiet for a minute. Comfortable, easy silence. Then Mandy propped herself up on one elbow.
“So how did this start? You and John. Tell me the real version. Not the brunch version.”
Jenny laughed. “The brunch version was the real version.”
John spoke up, “But I want to know how you both started.”
Jenny looked at her son. “You really want to know?”
“Absolutely.”
Jenny rolled onto her back, staring at the ceiling, remembering. “Honestly, I don’t think either of us knows exactly when it started. Do we, M?”
“No,” Mandy said softly. “It just sort of ... was.”
“We shared a room growing up,” Jenny explained. “And at some point—we must have been teenagers—things just shifted. We’d always been close. Physically close. We’d sleep in each other’s beds, cuddle, and hold hands. It wasn’t sexual. Until it was.”
“I think it was the night with Danny Morrison,” Mandy said.