That night was the first time since we'd been together that we didn't make love when we went to bed, it had been quite a day and we were shattered, th... following morning though was a different matter, I awoke with the usual morning erection and my gorgeous little sister decided she didn't want to waste it, she was actually riding away happily as I opened my eyes,"Ring the police Cassie" I grinned through bleary eyes, "I think I'm being sexually assaulted" You are" she agreed cupping both of her. ‘How am I meant to concentrate now I know what you have under that gorgeous little black dress?’ he asked, circling his waist with his arms. I shrugged. ‘Could you dress Issy while I do my make-up?’ I asked him. ‘In what?’ he replied. I pulled out a little pink dress from her bag. It was the most formal thing she owned and I thought it would be suitable. She couldn’t wear black, she was too little. He managed ok, and once my make-up was done I combed some mousse into my hair. I left some on. Have you got something a little more comfortable you would like to change into? I was asked. Yes, as I pulled out a t-shirt I wore as a night gown. She pulled out a frilly nighty and I watched as she pulled of her uniform. She had a beautiful body to go with her beautiful face. Large, firm breasts with big nipples just begging to be sucked. A flat tummy, trim beautiful legs and a full hairy bush around her love zone. Soon we were both comfortable, seated on the love seat. We hadnt chatted for. ”I endured ten minutes of submitting to his frantic grinding and oral onslaught before he commanded, “Time to turn over, boy, I want to pound your pussy.”After lifting off me onto his haunches, I quickly turned onto my stomach. Before lowering his body once more he punched and slapped my butt a couple times. The strikes weren’t very hectic, but meaningful.Next, Bull clamped my cheeks in his hands and begun to squeeze. This was a little more intense than his prior action and I began gasping.