I have always been quite an exhibitionist, and when I was about 14 years old, I did it in front of my neighbor girl.
My bedroom was directly across from her brothers room with their driveway in between.
I had seen her and her parents go off to church one Sunday morning, and I was excited about doing it in the window where she could see me when they came home.
She was a year or so older than me and was built like crazy, with very large boobs.
I got naked for the next hour and would rub myself to almost orgasm and then stop, waiting for her return.
Finally I heard their car coming up the driveway.. I stood up in front of the window as she got out of the back seat, right in front of the window..
Part of me was scared to death that she would see me, and the other part wanted her to!
She looked straight at me!
I ducked away from the window, my heart pounding.
I looked back as she and her parents went into their house. Had she really seen me????
My question was answered in just a few seconds as she appeared looking out from the bedroom window directly across from mine!
My heart raced as I sat on the desk adjacent to the window and continued to stroke myself.. I could see her watching me!
It was more than I could take, and I quickly felt that I was going to cum! I couldn't keep from arching my back forward as I held my other hand in front of my cock to catch myself, which was little help! I jerked and my cum came flinging out!
When the last drop had oozed out, I simply moved away from the window.
After that, every Sunday she would look at my window when she got out of the car.
Once, when she did I was this time sitting at the desk doing it. She couldn't see me down there, but she knew what I was doing! To my delight, she went into the house and again appeared at the window; I just kept doing it sitting down..
She then disappeared from the window and came out the back door! She walked straight over to my window and looked through the screen and down at what I was doing! All she said was 'I couldn't see you from the window'!
I said nothing and kept doing what I was doing... her pressed up against the screen, and me masturbating... I eventually felt myself going to ejaculate, and heard my breathing turn to panting as my cum shot up and onto my bare thighs...
She said 'that was a good one', turned and went back to her house!