Restarting time I listened closely. A few sighs but mostly I could hear nothing, then there was a creaking of the bed and more sighs, then a gasp. Counting to ten, I stopped time and re-entered the room. Monsieur was still lying down but now Madame had turned round and had impaled herself on his penis. His hands were holding her breasts and evidently she had been riding up and down his, now well lubricated, shaft - she was caught, frozen in mid stroke. Leaving the room, I took off my clothes, restarted time and listened erect at the door. I could hear movement becoming faster and faster accompanied by gasps, cries and a few choice French words. Suddenly movement ceased. Again I counted to ten, stopped time and entered. Madame had collapsed forward in, I assumed, orgasmic bliss across Monsieur's chest. She was still impaled, her legs wide apart straddling him with her knees either side of his hips, her bottom uppermost and very exposed. I could see below her bottom Monsieur's penis still stiffly embedded in her vagina and above her little brown wrinkled rose bud was completely exposed. This was too much even for me.
Glancing at the bedside table I discerned some massage oil. I applied this generously to my penis and dripped the oil onto her anus and, using my fingers, began rubbing with circular movements to relax the muscles. I slipped first one then two fingers in. What a wonderful bottom she had, the shape so perfect, the flesh so white, made the more so by the tanning of her skin above and below. Judging her ready I got up on the bed and placed my penis at her bottom hole and pushed. I was gentle and unhurried. I had no need to hurry, I had all the time I needed, and the act of penetration into this beautiful bottom was to be savoured. There below me was this bottom of bottoms, between the two cheeks her little bottom hole and pushing at it the dark head of my engorged penis. Gradually her anus spread, opening around my invading cock, and I began to enter her bottom. Slowly I pushed forward. Extended to the diameter of my penis, the strong resistance of her anal muscles overcome and with the aid of the oil I slipped further in. I paused looking down at my cock half hidden inside her bottom, my balls hanging free. Below them Monsieur's cock embedded in the girl's vagina. Of course I was conscious of the closest of her husband's cock; indeed I thought I could feel it below me and in the adjacent canal. I rubbed my hands on her bottom cheeks, pulled them slightly apart and pushed again, slipping further and further within. I watched as I began the normal in and out movement but sliding not in the usual place but in and out of her bottom hole. Despite the lack of substantial physical stimulation I realised the mental excitement had already brought me near climax. I slowed and let myself lie on the girl's back bringing my hands under her to hold her breasts. Gently I lifted my bottom up and down pushing my penis in and then pulling a little out of her bottom. Gently does it - savour the moment. But I couldn't last long, the tightness of her bottom and the excitement were too much. I tripped over the edge and with a strong thrust spurted into her again and again.
I lay breathing deeply on top of her until my cock had shrunk and I could just slip out of her. Standing up, the excitement and desire over, I could look coldly at what I had done. Once time started would she leap up intent on finding why her bottom was suddenly sore, and indeed dilated, and why she felt rather crushed as if a weight had been lying across her? I had to watch and see. I like my activities to be surreptitious, almost un-noticeable. This had, though, gone further than I usually permitted but, looking again at the fantastic bottom, I nodded to myself - I could understand why I had overstepped my usual mark, the reason was there.
Moving back and into the dark bathroom doorway I watched as time re-started. It seemed Monsieur had not, after all, finished and it was Madame who had come; his hands reached around her and clasped her to him as he thrust in and out of her, his pistoning penis so visible to me working beneath that marvellous bottom. Was my lubrication slowly slipping downwards to aid the movement, gently seeping from whence it had been placed? She did not pull away and when he reached climax shortly afterwards they lay together for a long time, indeed I think they went to sleep still connected. I was surprised and relieved but it did seem I had 'got away with it.' Madame had not reacted. Stopping time, I went over to them, my fingers touching again her delicious bottom, feeling her anus slick with my own coming and following it downwards to the gooey mess of her vagina and Monsieur's flaccid cock. Carefully my fingers encircled and I extracted it from within Madame and left it with its tip lying towards Madame's anus as if the cum there had resulted from a certain post orgasmic dribbling. Rather artistically arranged I thought.
I dressed and left their villa for my own, showered there and, not surprisingly, slept well. Another successful and happy day.