This happened when I was 12 to 13 and living in Nevada with my grandmother. Her step granddaughter Coleen was 17 at the time and also had been living there for 4 or 5 years. My grandmother was ill most of the year and 2 months I stayed there and Coleen was basically the one in charge. For some reason I always thought she was much older mainly because she was so tall and looked older than 17. She made my life hell during that time not just by the humiliation I was subjected to but she was just plain cruel to me. She hit me often but the worst thing was when she began spanking me and forcing me to pull down my shorts/pants and underwear. It was humiliating to say the least but 10 times worse when she did it in front of some of her friends. She kept a thin stick by the back shed and I was more often naked when she spanked me. I remember telling my grandmother several times that Coleen spanked me but all she would ask is what I had done. It was clear that Coleen was my grandmothers choice and I do admit Coleen took good care of her. It was about 6 months after I moved in that the humiliation got to the extreme. It was very hot and I know I was sweaty and dirty that afternoon but what Coleen did was beyond embarrassing. Two of her friends were out back and all I had on was shorts and sneakers. She made me strip naked right in front of the other two girls and after she spanked me made me lay on my back on the picnic table. She wouldn't let me cover my genitals even with my hands and began squirting me with the hose. After a short time she made me open my legs wide and began squirting my genitals with a spray of water. I did have erections before but this caused me to get hard and all they did was laugh at me. Coleen actually lifted my leg up and began squirting the spray up the crack of my butt to my scrotum and penis making sure I got an erection from it. She purposely exposed me to these girls just to humiliate me. It continued and today I can't remember how many of her girlfriends watched her doing these things to me but I know there were more than four of them. This treatment and the spankings went on until I finally moved back to LA with my mom. The following year my grandmother died and that was the last time I ever saw Coleen and don't know whatever happened with her. I did find out Coleen's grandfather was dead and her father was in prison. I never did find out anything about her mother. Her grandfather was my grandmothers second husband who I only met once when I was younger. Needless to say Coleen was a bitch and treated me like a dog.