Watching through the hole
When I was growing up I was a typical horny teenager. My sister's bedroom was next to mine. Our closets had a common wall separating them. (it was a thin sheet of plywood) there was a small hole in the wall in which I could see her bed. The morning was her favorite time to masturbate. I could hear the bed creaking and knew that was my clue. I would get down on my hands and knees ( the hole was low on the wall ) and watch in awe as she would lay on her stomach humping her hand. My cock was hard...