Wife said she was sub and hubby was dominate. She looked at me and said interested in giving it a try. I looked at hubby and said well? I said up to,u.... She turned to her and said ok she then said follow me. She led us to a private room and closed the door. She explained limits and we were good with the safe words. She asked wife if she was bi? She said she played around in college but nothing since. She said ok. She told my husband to sit in the chair. I sat down and she said you sit here. The butcher was a large man who had to look over the corner to see me after the customers before me had been served."What would you like?" I need some sheep and pig pelvises for medical research. I will pay for them."He looked at me and saw only a boy. "What's a kid like you doing with the bones?"I went into a detailed account of all the things I had to do to get to Lass' pelvis, then how I'd have to make a hemispherical cavity. I used all the medical terms and didn't miss a single muscle, vein. I was lost in my thoughts about what just happened and what it meant. She adjusted in her seat again and placed her hand on mine as the movie began.I was just enjoying the attention and thinking about what she had done to my ear when I felt her grab my hand and pull it to her leg. Not knowing what to do, it took a few minutes until I started tracing small circles on her shorts, moving slowly up to the crease of her hips.She adjusted rather quickly, like pulling away, I thought I had just lost. The next two hours Bob ran through the basics, like having subdued lighting with the light behind me and a soft down beat voice and so on, he also gave me some actual phrases that he had found useful in the past. No one was going to learn all about the subject in a drunken two-hour session, but at least I had started my education. The next class I had with Bob I could see that he was regretting his decision but it was too late now.By Christmas I was reasonable confidant that I knew enough to.