I felt like taking a shower, so I walked to the bathroom at the end of the hall. The door was cracked so I thought no one was inside. I walked in-only...to find brown hair hanging down from shoulders. Her back against me, masturbating, was Cassidy. Her nice, round, ass moving ever so slightly. I gazed for another 3 seconds, my cock getting harder, then I brought the door back to its original place and went to my room. Wow! She was hot as hell! I've always had a slight crush on her, and I've seen. Since I'm stuck here, I thought I'd try to learn more about your experiment, before deciding whether to leave. Are you a doctor?" Yes. Do you have a family?" she probed."No," Pat lied. "I live alone, in Chicago. For a variety of reasons, I have time on my hands over the next several months, and your experiment intrigued me. Is this some kind of university study?" No," she replied. "It is a privately funded program. I take it you read the qualifications in the advertisement?" Yes, I am a. Thinking the pain would subside I tried to just lay there breath and wait for it to ease up, I closed my eyes, controlled my breathing and tried to think about something else to help the pain go away and bam the pain hit again my eyes sprang open to see Mistress Debbie pulling the string tight stretching my nipple till I thought she would pull it off my chest. Mistress Debbie tied the string off and left the room. I could not even breath heavy with out it making my nipple hurt worse. About two. I encouraged Martina to try one too, and the garment she chose was even more extreme than the one I was wearing, It looked as though it was made from bits of a string bag with nothing of any substance to conceal any part of her gorgeous anatomy. Although it was made from thicker cord than the one I was wearing, there just wasn’t very much of it. We struck a provocative pose as we observed ourselves in the full-length mirror then she said, “Let’s go and see what the boys think.” Their faces were.