She put her boobs down on the top and I took her from behind. Mary had been fingering herself under the table for the last couple of rounds, so she wa... very wet. I entered her and went to work. It didn't take long Mary was very excited. I plowed her from behind until her pussy contracted around my cock in orgasm. She was moaning very loudly. But Jennie said she needed proof that Mary wasn't faking. Mary took Jennies hand and put it on her dripping pussy and Jennie said that she was convinced.. As soon as we were in the air and on our way I told mother that since I was going to be wearing just my g-string bikini's all week, I wanted her to at least try one for just one day. Mother had packed only her one two-piece swim suite. She said she would think about it and see if she could go that far. I told her that we didn't know anybody there and that the people we were going to meet would probably never see us again and that almost every girl there wore thongs or less and one more. The taste of plastic filled my mouth, and I explored the circle with my tongue. The top and bottom were grooved with walls going up around both sides of my teeth. The inside was smooth. I bit down, trying to get my teeth out of the grooves. It didn't work. I could barely force it down at all, and when I did, my teeth went with it. It was stuck in my mouth until someone else removed it. Or until I could get my hands free.I realized what it was - an 'O' Ring - I'd heard of them, and what they. Linda turned to her and said, "Our little Dan here is feeling a little insecure."Frieda pouted. "Oh no! How did this ever happen sweaty? Well, we'll just have to show you how much you mean to us, right dear?" "Yes, honey," said Linda.They led me into the bedroom and took turns turning my insides out. I should have been happy. I wasn't. It seemed like what they did to me was a coordinated attack on me. Instead of the three of us working together, I had faced a unified front that manipulated me.