Yes I have once. A old friend was in from out of town for a couple days. So the 3 of us spent the night out hitting the bars. During the course of the evening he mentioned had been months since he had been laid. So after the bar closed, we went to our house , where he was spending the night. I gave my wife the go ahead nod on the way home. We got home and she headed to the restroom to freshen up as we sat in the Livingroom having another drink. Next thing He knows ,my wife entered the Livingroom completely naked ,walked straight up to him, took him by the hand and headed to the bedroom. My friend turned and looked at me and I just gave him the go ahead look. I let them alone for a half hour or so and then followed just to watch. Wow what a evening.