I sat on the sofa eating toast and drinking tea, whilst reading the morning newspaper, dressed only in a T shirt and pyjama bottoms.When my sister wal...ed into the room, dressed in a long night shirt, nothing unusual in this at all, she then proceeded to sit on the floor with her back against the bottom of a chair and her knees slightly bent, it was then that I noticed that she had no underwear on and in that position I had a perfect view of her open pussy on view. I tried to not make it too. . It was obvious that they were pretty kinky/freaky when it came to sex, not major painful things but definitely into bondage and related things. I was not new to bondage, my first BBC guy had gotten into tying me up so I knew I enjoyed that. But this was going to be new... They had told me the only way I could ride it was if I agreed to letting them control it and I would be tied so I could not get off or stop it, they would be in total control, with the understanding of a safe word. So. ." "Oh, no, I mean... I'm not used to..." "It would just be a private thing," she looked at me with her big, doe eyes and I felt myself shiver, how could I say no to such a beautiful woman? "If you have time now we can go to my place after I've cleaned up, it would only take an hour or two." I didn't have anything else to do, so I nodded without really thinking about it and she lit up in a brilliant smile. "Wonderful!" I dressed myself and put my clothes in a plastic bag as Ariella cleaned up. I cower trying to hide the high heels once again, thistime under the chest of drawers. "Don't hide your shoes," she orders, but I don't listen. A quick smackacross my face gets my attention and I quickly pull my feet out from underthe drawers. I try to kick one of the shoes off with the other foot, butthe strap going around the ankle keeps it from coming off. She sees metrying to get off the shoe and her face turns from pure anger to almost asmile. But I don't like the looks of that smile. "Oh.