One afternoon during my last summer holidays on a Greek island, I fell asleep on the hot sand after swimming. When I opened my eyes it was late afternoon and the most people were gone. But I noticed there was one girl about 20 yrs old lying on her stomach close enough to me. She seemed to be asleep. She was wearing only a tanga slip and she had a nice slim tanned body. She was so sexy that as I was lying on my stomach too, I began slowly rubbing my crotch on the hot sand. The feeling was so wonderful that before long I came. But then I realized she had been watching me under her sunglasses and she was fingering herself. After a while she made a groan, she turned on her side and she put her whole hand in her slip. She was moving her hand fast and a little later she stayed still. Obviously she had come too. Some minutes later she was dressed and went away.
But the next afternoon she was there again and we repeated the same thing as the day before. After we finished I tried to speak to her but she just smiled to me and left.
I never saw her again but I' ll never forget this experience.