I had just caught the train home at 3am from a night out with friends.
Walking up the hill to my house I suddenly got really hard and was playing with myself while walking.
I sat down next to some big bushes behind my street of houses, stripped off and just stroked my cock for a long time.
It felt so good with the cold grass on my naked ass.
Once I knew I was about to cum I stood up and shot all against my neighbours fence. One of the best orgasms I've ever had.
And I have done this a few other times as well.