Kim's Obsession, My Gain
Copyright© 2026 by Incrediblehunk77
Part Seven: The Lesson
Incest Sex Story: Part Seven: The Lesson - Kim, a driven single mother, has a new fantasy in her sights: watching her boyfriend fuck her 18 year old daughter.
Caution: This Incest Sex Story contains strong sexual content, including Ma/Fa Ma/ft Fa/ft Lesbian Heterosexual Incest Mother Daughter
Katie sat up slowly, her movements languid, post-orgasmic, her skin flushed and glowing. She pulled her shirt over her head, revealing herself—small, perfect breasts with dark nipples that were hard and sensitive, a slim waist that flared into those volleyball hips Kim had described, the pink panties still pulled to the side, exposing her glistening pussy.
Rob stepped back, removing his boxers, his cock springing free, hard and thick and leaking precum. Katie’s eyes went wide, her mouth opening in a small ‘o’ of surprise and desire.
“He’s big,” she whispered, and Kim laughed, a warm, maternal sound that was completely at odds with the situation.
“He is,” Kim agreed, standing up and removing her own shirt, now as naked as they were. “And he knows how to use it. But first, baby, you need to learn how to please him. Come here.”
Kim guided Katie to the edge of the bed, positioning her on her knees facing Rob. Katie looked up at him, her eyes wide, uncertain but eager.
“Have you done this before?” Kim asked, her hand on Katie’s shoulder, her other hand wrapping around Rob’s shaft, stroking him slowly.
“Once,” Katie admitted, her cheeks flushing. “With Jake. But I didn’t ... I wasn’t very good at it.”
“Jake was a boy,” Kim said dismissively. “Rob is a man. And I’m going to teach you how to make a man feel good. Watch first.”
Kim sank to her knees in front of Rob, her mouth finding his cock, and Rob groaned, his hands finding her hair, holding her as she took him deep, showing Katie how it was done—how to use her tongue, how to relax her throat, how to create suction and friction and wet heat. She pulled back, his cock shiny with her saliva, and looked at her daughter.
“Your turn,” she said, guiding Katie forward. “Lick the tip first. Taste him.”
Katie hesitated, then leaned forward, her tongue darting out to lick the bead of precum from Rob’s tip. She made a sound, a hum of approval, and licked again, more confidently, her eyes closing in pleasure.
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