When I was a teen my parents divorced. A few years later when I was a senior in high school my mom married to Ned. We moved into Ned's house. It was a modern house with the common rooms, living room, kitchen, and dining room, in the center and two wings on either side. One side was the master suit where mom and Ned had a bed and bath and the other side had two bedrooms and a bathroom.
I shared the wing with Ned's daughter Chrissy. I was old for my grade and had just turned 18 early in my senior year. Chrissy was almost a year older than me but because she and Ned had spent a year in France, she repeated her Freshman year so was still in high school even though she was almost 19.
One thing I had brought with me from our old life was my dad's collection of Playboy and Penthouse magazines that I had pinched when my parents broke up. I had been masturbating daily with the magazines for a couple of years and thought about girls constantly. I liked the Playboy magazines because the Bunnies usually had big tits and blond hair. The Penthouse Pets showed more pussy and the Penthouse Forum was more explicit than the Playboy Advisor.
One day I had read Penthouse forum and was masturbating and looking at the photos. Suddenly the door opened and Chrissy walked into the room. Before Mom and I moved in this had been her sewing, ironing room and she stored some clothes there. I think she just forgot that I lived there now. Chrissy walked half way across the room before she realized I was there. I had frozen not knowing what to do.
When Chrissy looked at me and saw my dick in my hand, she squealed "Oh my!" and put her hand to her mouth. I grabbed a pillow and swept it over my dick in embarrassment. Chrissy's eyes light up and she smiled. "You were MASTURBATING!" she said enthusiastically.
I was mortified.
"Um, well, I...I...was just..." I stumbled.
