" And if we source current through this transistor then gate it?" We turn it on and off really fast, letting controlled amounts of energy flow." She l...ughed that little titter thing that I love to hear. "And with this setup, we have a very ugly and expensive light dimmer." Uh-huh," I laughed. "And why do we pulse instead of just biasing to raise the resistance of the transistor?" And she explained it to me."You wanna know what else is on my mind?" Terri asked."Always do," I replied. "You're a. She walked to Ida, kissing her on the cheek, then to Nathan, and finally to me. She kissed me on the lips and ground her lips into mine and quickly rushed to the refrigerator for a glass of juice. I looked at Nat and Ida and saw Nina had left lipstick on their cheeks. They in turn looked at me and started laughing.I got up and Nina ran behind Nat, keeping he and the table between us. I looked at her and she was smiling and I knew what she had done. I went to the bathroom and her lipstick was. It will be strange to have sex in front of my mother but she said she is cool with it. Can we have a quicky before I am going to mow the lawns. Ok do you want a doggy or a standing fuck. I want to sit on top of you because I am so horny she said. Dan kissed her and take her panty off. He laid on his back and she climb on top of him. Her pussy was wet so his hard cock slipped in very comfortable. She bounced up and down and he could see she was very horny. That night he put the mattress on. I kind of liked that view of it.I took him in hand and rubbed him up and down between the lips of my pussy. That feels good, too, though most guys don't realize it. He even slipped it in a couple of times, but he was wilting, and didn't stay long.He did get me up for someone else, though, and this time I was on top. Girls like that, in part because we can control the speed and depth. I also had learned to swirl around a bit so he thrust into me at different angles. That was way cool.At the end,.