happened at 16
Our house in the south was L shaped with the largest living area at the bottom of the L and the bedrooms along the side. We had a pool in the inside of the L with all our bedrooms facing the pool with sliding glass doors & windows. Waking up one Sunday morning I checked the house, nobody home, decided to take a quick swim.
Always horny, I got out of the pool, went into my room, shut the sliding glass window/door got out of my suit and proceeded to start wanking my knob. Taking it slow with my eyes shut I was startled to hear only muffled by the closed glassed door, 'MOMMY WHAT'S HE DOING'. There outside by the pool was my Mom, Dad, younger sister and the new neighbors with their five-year-old daughter all staring at me in shocked amazement. Talk about losing a hardon!