Cassie and Rita were not friends. In fact, they were mortal enemies even though their parents had decided to marry one another after the girls went to...college. Neither girl minded her new stepparent but she was not enthused about her new stepsister.A few seconds later, Rita returned to the room with a triumphant look."Good luck finding your stuff, Nerd," Rita hissed. "Or rather, good luck reaching it when you find it."She strutted from the room while Cassie steamed. It took Cassie only a few. I should imagine that must have got right up the guys nose sometimes, I know that it would have mine. Pretending to be studying some paperback, I watched the figure out of the corner of my eye as she herself strolled towards the same bookstore, eventually stopping, to thumb through a magazine rack out front. ‘You’re not mistaken this time, that definitely is Nellie!’ a little voice insisted in the back of my head somewhere. ‘It can’t be,’ my conscious mind argued, ‘wrong part of the country!’. I tried to drill her ass with my dick. She looked at me.Me: What happened? You said you would cook something to eat, right?Mom: I am very much tired.I turned her towards me and looked at her.Me: Somebody asked me if I am tired.Mom: For the last one week, both father and son have been fucking me all night. And from the last night, you have been doing me continuously. I am not whore.We looked at each other for a moment. I smiled and pressed her waist. She giggled and wriggled out of my embrace. I. She suddenly grabbed my wrist and began tying it down with rope that was attached to an eyehook that was screwed into the floor. It had been hidden under the edge of the towel. She did the same with my other wrist, followed by my ankles so that I was completely spread eagled before her. She gave me a sly, hopefully seductive grin just before she leaned down to my face and gently bit my lip and stroked my cock. My eyes closed as she leaned back to enjoy the feeling of her little plaything in her.