Rookie Scribe
When I had just begun high school, I was in my room one afternoon after classes ended. Before I began jerking off, I was certain the house was empty. But while I was stroking, I saw the flash of a shadow through a small opening in my not-quite-fully-closed bedroom door. When nothing further happened, I went back to stroking my cock... But even though I continued too jerk off, I used my peripheral vision and became certain that I was being watched as I played with and stroked my cock. Soon it became apparent that I was being watched by my older sister Heather. Realizing that she was actually a willing audience to view my cock and to see me stroking myself REALLY turned me on... But what drove me into full ejaculation was to hear the sound of her cell phone "clicking" and realizing that she was photographing me and my cock for her own personal use - maybe sharing it with a few of her girlfriends. I must confess that being watched like that was a total turn-on!