Underneath it was her son's clad cock, going in and out of his sister's snatch. It was such a hot sight, seeing her two children's incestuous union, w...tching their naked bodies as they did something so disgusting and perverse yet so mesmerizingly beautiful. Seeing her daughter with her brother was even hotter than seeing her with her father and Liz let out another moan as a small orgasm shook her body."Oh my god! This feels so good!" Lisa moaned in bliss, the bed creaking loudly under them. She. She smiled down at me as if she had won a bet. I didn’t know until later - it was a personal challenge she had made to herself - and conquered.She was still smiling as she licked her lips in a complete circle, before licking my lips in the same manner. No one had ever done that to me, and I nearly turned my head away. Her eyes were locked onto mine, and I endured the licking. Then, she licked me again and I wanted more.I thought she was about to say something, but she didn’t. What she did, was. The phone rang again. This time it was Tiny and Jimmy saying they were on their way out. I had just hung it up when it rang for the third time. Pete was on his cell, telling me they were starting on the fence at the back of the property. I told him to go ahead and to remember what I wanted with the razor wire. He said he had fifteen rolls left from a job that he would use. It wouldn't cost me much since it was surplus and nothing he would ever use on his normal jobs. I thanked him and was. Rick was enjoying my handjob skills but he wanted more.“Mom please can you do that to me?”“What?” I asked while continuing to stroke him“Mom that what you do so well, I mean,” he appeared a bit hesitant, “I want to know how your mouth feels.”His direct approach threw me a bit aback but now we both have gone too far. I tried to reach his throbbing cock with my mouth saying, “As you wish son.” He interrupted “ No change your position mom.” I looked up with curiosity in my eyes.“Mom, lie down.