A couple of years ago my wife and I had a day out with her sisters in the countryside. It was a hot summer's day as we walked through an area of forest. We had been walking for quite some time in the middle of nowhere, my wife was ahead with her elder sister and I was some distance behind walking with her younger sister, Jeanie who was scantily dressed due to the heat in a loose T-shirt and short skirt.
I was feeling quite horny as we walked side by side.
Jeanie said she needed to pee and would I mind if she went into the bushes. I said thats ok and told her I also needed to do the same. So we found a large mound of bushes, she went on one side and I stayed on the other but I could see through the bushes as she squatted down and pulled down her white cotton panties. The sight of her bare crotch and gaping pussy was sending me wild. Having a pee was not my priority, I took out my cock and began to masturbate. As I watched I saw her pee begin to flow and squirt from between her legs which got me even more excited as I continued to jerk myself off on my side of the bushes.
'Have you finished yet?' she asked, meaning having a pee. I told her nearly and as she finished watering the ground I held my hard cock tight as I ejaculated into the bushes. I managed to put it away just before she came around to my side. 'That's better now,' she said and of course I had to agree.
I often wonder what she would have done and said if she knew that I was actually masturbating and not peeing.