When I was 15yo I masturbated every damn day, sometimes two and three times. I learned that the internet would provide me with enough porn I could jerk off until I went blind. I had one sister two years older than me.

I was always waiting for my mom and my sister to go shopping, our dad was in the military and gone for long periods of time. Once my mom and sister were out the door I was on the computer looking at porn.

One Saturday my sister had soccer practice and my mom took her. She usually watched the girls practice and I knew I had a couple of hours to do my thing. I had watched them leave, and I was on the computer moments later.

I had found some DP video and I was stroking my cock watching two guys fill some blonde up in both holes. Just as I reached my climax the door opens up and my sister walks into my bedroom as I'm squirting my load. I was so into the porn video I never heard my mom's car pull into the driveway or the noisy garage door motor.

Out of the corner of my eye I saw someone standing in the door. I turned to see my sister standing there with her mouth open in disbelief. We just looked at each other in silence for several moments, my spent cock dripping cum all over the floor. She seemed to stare at my cock as the remaining drops of cum dripped out and then looked up at me.

Finally she backed out the door and closed it behind her. I just stood there in horror, I was just freaking out what she was going to tell our mom? The house was dead silent, I heard the car start inside the garage, the door closing a few moments later. I watched my mom drive down the street and around the corner out of sight.

For days I waited for my mom to come and have a talk with me of some kind, surely my sister had said something. My mom never spoke of it, my sister never said another word about it, even to this day.