Nude walk outside
A few years ago, I walked down to a small wooded area at night. Since there was nobody around, I took off all my clothes and walked into the area naked, with an erection.
I walked down the lake side to where it joined a walking trail. There was also a small hilltop overlooking the lake in one side, a quiet road with some houses on the other side.
I climbed the small hill, still naked, right to the top, and enjoyed the view. I then jerked off and came on the hilltop.
I then casually walked back to where I got my clothes, and walked back home, like nothing happened