Disclaimer: All sexual activity described is between fictional characters over the age of 18
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Driving home after photographing one of the few weddings which wasn't a referral from his wife Karen's wedding planner business, Sean looked over at the bouquet of flowers that the bride had let him take as a thank you for his work. The lilies were Karen's favorite flower and he knew she'd love them, even if Sean hadn't had to pay for them. He had gotten a card for the florist as well, so he could buy twice as many for their upcoming anniversary, their 20th.
Pulling into their driveway next to Karen's car, Sean hoisted his camera bag over his shoulder, grabbed the flowers and went to the front door. Finding it locked, he pulled his keys from his pocket and opened the door.
"Hello?" he called out, once he was through the door, setting his bag on the low table next to the stairs. Nobody answered, so he went to the kitchen, filled a vase with some water and a package of plant food and settled the flowers into it.
He heard a noise from upstairs, that resolved into a moan. 'Is Karen jilling off?' he thought.
Leaving the vase on the kitchen counter, he climbed the stairs and entered their bedroom, the only one occupied in the big four bedroom house. Karen and her first husband Scott had bought it when they married, anticipating several children, but Karen had needed a hysterectomy due to bleeding after Jenny's birth and then Scott had died on a motorcycle when Jenny was 3. Sean met her after she started her wedding planner business.
The source of the moaning was Karen, but she wasn't masturbating. Two women were in the bed, in a 69 position. The woman on top was a blond, her face obscured between Karen's thighs, as the auburn hair at the other end of the bed could only be Karen's.
His reaction was not anger, but an instant turn-on, as he felt his cock jump in his slacks. Sean and Karen had talked in the past about her lesbian experiences during college and maybe finding another woman to join them in bed, or even Karen having an outside relationship with a woman, but nothing had ever come of it. Maybe today was the day?
The two still had not noticed him, as he unzipped and pulled his cock through his boxers into the open air. He was just about to start stroking it, when he was embraced from behind, a woman's hand grabbing his cock and licking his left earlobe. He glimpsed brown hair out of the corner of his eye. "Aren't they beautiful together?" whispered the third woman.
Sean looked back and jolted in surprise when he discovered that it was his step-daughter Jenny hugging him. Naked, voluptuous Jenny, her C-cup tits pressed to his back. Before he could even gather his thoughts to say anything, she was sliding down his body to her knees and had his cock in her mouth and her hands on his belt.
Jenny had come out to them as a lesbian when she was 18, so Sean didn't even think she had any experience with men. That was true at the time, but several threesomes with girls who had boyfriends during college had convinced Jenny that she was at least partly bisexual. Jenny gobbled his cock down into her throat with ease, fulfilling one of her oldest fantasies about Sean.
"Jennifer?" he finally managed to sputter. "What the hell?"
Jenny didn't answer him, sucking his cock and getting his pants undone. She said, "You taste good, Dad," during the brief pause when she pushed his cock back into his boxers so she could pull them down, leaving his pants and boxers around his knees, then dove back into her blow-job.
The action on the bed was intensifying, both Karen and the woman Sean finally recognized as Jenny's wife Katie moaning and grunting with more volume. Karen began shaking in orgasm moments before Katie started doing the same.
Jenny's tongue and suction drew Sean's attention back to her. He felt his balls tighten and he managed to say, "I'm gonna cum, baby." He thought, 'into my daughter's mouth,' as the first spurt jumped from his cock into her throat, the rest pumping into her mouth.
Sean pulled Jenny to her feet and was about to yell at her when he saw her swallow his load and she said, "I know this was kind of an ambush, Dad. Please don't be mad," and hugged him, resting her head on his shoulder. The little anger Sean felt dissolved immediately. Jenny had always had him wrapped around her little finger, even before he married Karen when Jenny was four and a half.
Karen and Katie parted on the bed, Katie rolling to her stomach and propping herself up on her elbows, saying, "Hi, Sean," as if he had only walked in on the three of them playing dominoes at the kitchen table. Sean had to pull his eyes from Katie's D-cup tits resting on the bed to look his wife's way. Karen just looked up at him with a naughty smile, but said nothing as she licked Katie's juices off of her lips.
"Someone explain what's going on, please?" Sean asked.
Jenny answered, "I've got a favor to ask you and Mom and Katie was Mom's price, just to be able to ask you."
Even more confused, Sean asked, "What favor? I would normally say 'anything for you,' but I think this time I might need to know what it is first, if your wife and mine licking each other's pussies is just your mom's price of entry."
Jenny made sure to make direct eye contact with her step-dad, the only dad she really remembered, before saying, "I want to have your baby, Dad. I want you to knock me up. Preferably tonight."
Sean blinked twice, making sure he'd heard her right, before saying, "That's incest, sweetie." That his cock jumped at the word frightened him a little.
"Actually, the law says it isn't, Dad," she said. "While some states might outlaw it, California law doesn't treat relationships between step-parents and step-children as incestuous, unless adoption is involved. If both are old enough to consent, it's legal. We could even get married, if we weren't both already legally married, that is."
"Hold on," he said. "Karen, you're on board with this?"