I've had this one for years but have never shared it before...

You are restrained on the bed, wrists tied to the bedposts and legs pulled open wide and back, secured so that your pussy is tipped up, so that not a single drop of cum can flow out. This is consensual and agreed upon before hand. I, having saved my cum for a week before hand, mount you and slide my cock in as deeply as possible. Fucking you slow and hard, until you cum and I cannot hold back any longer. I thrust deep and empty my load into you. You stay in that position, I'll bring you snacks and drinks and pamper you until I'm ready to go again. Then repeat the slow, hard, breeding sex. Over and over again. All day. Until your pussy is overflowing with cum. Sloshing out every time I put my cock back in. Running down your ass and onto the bed. We do this all day and into the night. Each time getting more primal and desperate as the chances of successful breeding increase. Keeping you full and overflowing, until one of us simply can't anymore. Thoughts?