It took some time to open the little hole, but Billy finally got the head of his cock in. She screamed so loud, I think the neighbors might have heard...her, even if they were so far away.Billy waited until she settled down and with Daddy’s help he went in another 2 inches. She screamed again and I knew how it felt. I had to do it yesterday. Then Billy told daddy to let go.As soon as daddy let go of his cock he started to pull back out. She relaxed a little and when she did that, Billy drove his. I meant, if I don't cum again," I clarified, although I was in danger of losing track of the conversation with her hand fiddling with my limp cock."Oh. Well ... I tell you what. If I can't make you cum again within one hour I'll dress up and let you take me out for a movie and dinner tonight." Her fingers toyed with my cock."That sounds like it's a prize for you, not me."Sparklingly beautiful pale blue eyes looked at me. A gorgeous mischievous smile appeared that made my chest ache. "Didn't I. I even learned to exercise in heels which made my slender legs and calf muscles far shapelier as a result. In a way, that kind of pain just made me hornier. Whether it was the pain in my feet or from the piercings and tattoos of ownership that covered my smooth flesh or from the weight of the huge milk filled udders that hung from my chest, but I knew my sexual arousal from pain to be part of my conditioning as well. Once I heard my name I plastered on the biggest smile of perfect white. I inserted my cock in her pussy and I was in heaven. I kept thrusting for a while and then increased the pace. When I reached my max pace, she started to moan heavily and the entire room was filled with her moan sounds and the ‘thap’ ‘thap’ sounds of my thighs hitting her ass cheeks. After a few minutes, I turned and started romping her in doggy style.After a while, I asked her when did she have her last menstrual cycle to which she replied, “Three days back”.So, during the doggy style fuck, I.