One of the most embarrassing things that happed to me when I was 13, happed when my parents left for work one mourning. My sister Sherry was 16 and always playing jokes at my expence. She had two of her girl friends that had spend the night in our home, and as soon as our parents left she was in her joking mood again. She knew I sleept naked so she opened the door of my bedroom with a pinn and came in with her friends. They sat at the edge of my bed with smiling faces and I knew what they were about to do. I wasn't shure but I held on to my sheet just in case. They began pulling the sheet teasingly as I was holding it up. I was blushing with embarrassment and had gotten a hard on in the struggle. They pulled for every side as i struggled to not let them exposed me but at the end, with one big tough managed to yank it completly off. I tried to run to my closet but they were all pushing me back so I couldn't get some thing to cover up. They had the laughf of their life watching who I struggled with my hard dick waving in mid air.