Sometimes even voyeurs get spied on. That afternoon, taking advantage of being home alone, I started watching a porno VHS tape a friend had lent me, and to enjoy it better, I had put on headphones. Unlike today, where you can find all the pornography you want on the internet, back then, watching a hardcore film was an event, and my excitement was so great that I came several times while watching it. It was after my last orgasm that I turned around and saw my sister standing in the doorway of my bedroom, and I jumped in fright. But immediately after the fright came a feeling of shame and embarrassment that paralyzed me. She looked at me, her gaze falling on my still-erect cock and my hand dripping with cum. Her face was all red, and her expression was a mixture of embarrassment and excitement. While I was trying to find the words to justify the situation, she asked me who had given me that VHS tape, and when I answered, she said that my friend and I were two pigs. Then after taking one last look at the movie and my cock he went to his room......