I have a few occasions.

At some point in life, I lived in a newly developed area and I liked to take some long walks to clear my thoughts and… do stuff by myself, on the hills.

I once spotted a couple making out near some old derelict wind mills. She had his meat in her hand and he had his hand between her tighs. She wasn’t being shy in regards to how she enjoyed what he was doing to her. Watched for a few minutes, from a good safe distance, then sneaked away.

More recently, while walking my dog, we literally surprised a couple that was getting it on hot and steamy in a secluded area of a nearby park. Off leash, my dog was a concern good boy and thinking the dude was hurting the girl, has she was trying to swallow his meat whole and grunting, barked at the guy, while staring down on them from a ledge. The girl screamed her lungs out then started cursing my dog, who barked again manifesting his disapproval of the reaction. I laughed my way home.