I went on a ski trip on New Years with some guys from college. We shared the chalet with some kids from their high school I did not know. I got stuck sleeping in a kids bunk room where we also stored the skis and boots. There was no privacy. The wall was open at the top to a bedroom on the other side were a girl and her boyfriend were sleeping. From my bed I could hear them everytime they had sex at night, I wanted to beat-off, but was afraid of getting seen.
One afternoon I had a bad fall and went back to the chalet. I did not think there was anybody there but me. I lay in my sleeping bag on the top bunk and was beginning to masturbate when I heard a sneeze from the other room.
I looked over the wall and the girl was in the bed, nude, covered only by a sheet. She was wearing one of those eye-shield things and could not see me. Through the sheet you could see the shape of her body perfectly. I could tell she had shaved her pussy. As I watched, she tossed and turned in the bed before lying spread eagle with her legs open wide. She had her hand on her mound and was fingering her clit. I watched as she rocked her hips back and forth until she came and went back to sleep.
I then went back to my bed and beat-off, while listening to her snore.