Annoyingly, I felt cum rising from my balls. Thrusting downwards, I removed my cock from her mouth. Rachel looked at me, a vision of delight changed t...o confusion.“Darling, you’re really too good at that. And if you kept it up, Daddy would cum in your mouth, and I want to cum in your pussy,” my words changed her expression to one of excitement. “I’m on the pill.”Her jumpsuit and panties flew off, and suddenly I was looking down at Rachel’s gorgeous, 18-year old body laying on the couch, my cock. " How can I love that many people?" I asked her."I have no idea," JR told me. "I do know that you will try your best to love us as much as you can and as much as we need. That, Tom, is the bottom line as far as I'm concerned."JR paused, and then simply bent double, laughing wildly."What?" I forgot something," she told me, a new, enigmatic look on her face, one I'd never seen from my sister before.She had gotten a grip on herself, now she looked at me. Now that is the true grin of a Cheshire. I was shown more than I calculated could exist. All of what it showed me was only a single leaf on a healthy thousand year old tree in the summer. When I whined out in frustration at not getting the knowledge I wanted, it wrote me a message. Now that I was finally here with you my hormones were overriding my ability to think clearly. My primal instincts were driving me to breed with the only suitable male to impregnate me. The need was so strong it overrode everything else in my mind. I could. . So I hope you’re not pairing me off with a great dane!!” She laughs at the idea.Cut to: Rachel opening the door of a small photography studio we’ve hired for the afternoon. There are various tripods and flash reflectors/screens placed around the room, plus a leather couch that has featured in a thousand family portraits over the last few years. Sitting infront of that couch, with a big snarling smile on his face, is Randall – everyone’s favourite pitbull. Behind him, on the couch, is his.