I did so and turned my head to watch her as she untied the sash of her kimono and let it drop to the floor. She was naked apart from a tiny black tho...g. She said "would you like me to take off my panties?" I was overcome with excitement and managed to stammer yes. She slid the panties down and her beautiful cock sprang out, already semi erect.I continued watching as she arranged towels and lotion, then she lit a cigarette. I was thrilled as I have always had a smoking fetish and would be. In turn, he increased his oral manipulation of her soft flesh and the contrasting hard nipple. It served to increase her pleasure, and the orgasm was topped by aftershocks, until a second and then a third hit, each more intense than the one before."No more," she whispered, breathlessly. "Please, no more."As she collapsed, Rob caught her. He rinsed the rest of the soap off her body with the water pitcher, and helped her out of the tub. He dried her off and laid her on the bed. He then got back. "Oh God, that's good..." she cooed.She moved up and down on my lap, picking up speed and grunting as she took my cock inside of her. I was sitting kind-of sideways on the seat and it was then that I noticed a man sitting in an SUV parked behind us. Because of our van's seats, he couldn't see much of us. But the way my wife was grinding on me, there wasn't any doubt as to what we were doing. My first instinct was to stop; this guy was definitely watching us. But he didn't seem upset by it. So, I. Then Samantha took her panties off and stuffed them in my pocket. I watched as she dug out another pair to slip on.When we went back downstairs I was invited to stay for dinner and we were told that Samantha’s father was working late again. I got the impression that he really wasn’t working and that he might be fooling around with another woman.Right in the middle of dinner Samantha said, “Mom you can have your dildo back if you need it. I don’t think that I’ll be needing it for quite a while.