Marissa has an idea.

After the festivities around your children's birthday settle down, You and Marissa return to your room to retire for the night. You barely make it in the door before Marissa wraps her arms around you and kisses your neck. Her breasts press against your back. It's a standard procedure that both of you go through every evening. You turn and kiss her and your entwined bodies slowly move over to the bed. By the time you sit, both of you have nearly completely disrobed. She sinks onto your lap and while slipping off your wife's bra, you take a moment appreciate her body. Marissa hasn't aged at all over the last eighteen years. Her body still looks as young and attractive as when you first married her. You cup her breasts and lick her nipple causing her to moan in delight.

However, tonight it would see Marissa doesn't want to jump straight into the sex. She kisses you gently on the lips before getting up and moving behind you. Her hands drift down your chest as she leans against you, "Our children have turned into beautiful young adults, haven't they?"

You kiss her hand, "Yes, I couldn't be happier."

A hand snakes down into your underwear and slides them down, freeing your cock. "What do you think of Anna?"

Your mind returns to your beautiful daughter and Marissa's panties get thrown on the floor beside you. "She's a beautiful young lady and has grown into a well mannered noble lady. She's taken after her mother in at least the first regard."

She chuckles a little and you feel her hand wrap around your cock and stroke it gently. "Yes, but what do you think of her? Would you bed her, given the chance?"

You feel a bit surprised at her question and mull over it for a moment while she slides her hand along your shaft idly. "If she wasn't my daughter...maybe."

Her hand tightens briefly around your cock before her full breasts and moist pussy drifts back into view. For a moment you feel a strange maliciousness from her that you're not familiar with and fear that you made her angry, but she sinks onto your lap she wedges your cock ever so closely to her warm entrance and grins at you. "Come now. Does it really matter that much that she's your daughter?"

"Of course it does. If it was found out, a lot of people would be angry." Marissa lifts herself onto your cock and slowly sinks down onto it. The warm folds of her vagina wrap around your cock and you close your eyes for a moment and revel in its pleasure. Despite having two children and regular sex that she and you engage in, she's still nearly as tight as a virgin. Her hands drift to your chest and her hips start rocking back and forth, grinding your cock inside her.

Your wife arches her back a little and slides along your cock. The muscles in her pussy quiver, twitch and squeeze wetly around your cock just right to send waves of pleasure through your loins. "If that's the only reason, then the obvious solution is not to get caught."

Her eyes stare at you with a piercing gaze and her arms slide up to wrap around the back of your neck. She moans gently and bounces on your cock slowly, but keeps her gaze on you. You thrust your cock up into her a little, pressing yourself deeper into her before you respond, "She's still my daughter..."

Her expression gets a little more serious, "I saw how you looked at her tonight. That expression of lust on your face reminded me of the day we met. If you want her so badly, then go for her."

You gasp in arousal and pleasure as your mind wraps around the thought of bedding Anna. The idea of laying her down on your bed and piercing her with your cock. You can't deny the exciting thought welling up inside you much like your cock inside Marissa. You blink and for a brief moment, it's not Marissa riding you, but Anna. A pleasured look on her face while she bounces on your cock. Another blink and the vision is gone. Marissa is there again watching your reaction. She presses herself up against you and her stiff nipples press against your chest. "How about I make the deal sweeter? If you fuck Anna, violate her, **** her, woo her, do whatever you want with her, then I'll give you another child."

You feel your heart beat harder with each passing word. Every word Marissa pours into your ear causes your pleasure to grow until she finally reaches the end of her sentence. Suddenly your instincts to breed well up inside you. Your whole body stiffens as you suddenly climax. Inside Marissa, your cock throbs and twitches excitedly before it shoots thick wads of warm seed against her cervix. She slowly sinks down onto your cock as it fills her with your essence.

After you finally calm down, she chuckles and kisses you on the lips, "Well, It seems that someone likes the idea. So, what do you say?"