As it was another lovely evening, Julie and I suggested to the twins that we went for a walk to get some exercise and fresh air. Jen was still off gam...s, so she and Hamish kindly said that they would stay behind and play cards with the other four, once Hamish had made his weekly phone call home to assure Catriona that he was still in one piece.That night was just a simple swap back to our normal term-time arrangement; as soon as we were out of sight of the factory, we changed over and I took. But as they did, they commented to each other loudly enough for us to hear that we were definitely ready for the evening.We didn’t have much time to linger on what might be coming next. I was instructed to lay on the floor and Sharon to get over me in a 69 position. We were to make each other cum. We were not to move from that position until we both did. I watched as Sharon looked down at me as she got into position. I could see her blush at the thought of being watched so blatantly while we. I opened my legs to permit her better access. I moaned softly as she rubbed the wetness around, creating little circles around my hole, then pushing into it."Oh my god, mom..." I said, my head falling back in the pillow. She smiled at me, then positioned herself between my legs. Her breasts lay into the comforter, her butt sticking up where I could see it beyond my knees. She played with my lips and clit for a minute or so, seeming to enjoy exploring my details."You are so pretty down here,". I sat humbled, sheepish - even embarrassed, as I struggled for words to properly respond to such praise. I certainly never would have guessed my mother in law held me in that high regard. Finally, I raised my head and looked back at Boyd and responded honestly, "I love you too, Boyd. You guys make me feel like a part of a real family. That's something I've never had before." I guess it was the fatigue factor again but emotion caught me suddenly and my voice actually cracked a bit and tears.