When I was about 13 my parents went to visit and help my grandmother and left my 16 year old sister in charge for the weekend. She was much bigger and stronger than me and had often bullied me as I was growing up. Earlier that week I had been caught smoking so my parents were really down on me and gave my sister permission to punish me if necessary since I was already grounded. Saturday, my sister's hot 17 year old boyfriend came over. I had a secret crush (at least I thought it was secret) on him and I thought he liked me too because he talked and joked with me a lot and one time he even said he thought I was cuter than my sister and that I would really be hot when I grow up. Anyway, everything seemed fine that day as we played cards, watched TV, and talked and stuff like that. I would jump out and scare and tickle John (her boyfriend) and my sister now and then and sort of teased them a little when they would make out. John chased me down and tickled me a couple times - it was fun. At one point my sister got mad and told me to leave John alone and stop seeking attention. I said I was sorry and was just playing and it didn't seem to bother John. He spoke up and said it was all right and told my sister I was just a little girl trying to have fun. My sister said it did bother her and for me to leave them alone. So I went up to my room and everything was quiet for awhile. Then it was time to fix dinner. She called me to come down and help. I was setting the table when John snuck up behind me and tickled me. I screamed and tried to tickle him back. I guess my sister didn't see him sneak up on me because she grabbed my arm and dragged me into the bathroom and said, "If you don't stop flirting with John I'm gonna make you wish you were never born!" I didn't really know what flirting was so I said "I'm sorry, I won't do it anymore." Dinner went pretty well it seemed, but afterwards when we were washing the dishes I accidently broke one of my mother's nicest plates. My sister started screaming at me and accusing me of breaking it on purpose. I yelled back at one point saying "I didn't mean to!" Then she said, "That does it. You caused trouble all day. You broke one of mom's best plates. You bothered John and me, and now you're yelling at me!" Then she grabbed my arm again and told John, "I want you to watch this to help this little brat learn a lesson." With that she dragged me to a kitchen chair, pulled it out, and sat down pulling me over her knees. She started spanking me and I tried to block her swats with my hand. She grabbed my wrist and pulled my arm up between my shoulders saying, "If you fight anymore, I'll break your arm." It hurt terribly and she seemed so mad I was really scared and stopped struggling. She spanked some more and then started pulling down my pants with the elastic waistbands. I tried to get away and screamed "NO!" but she pulled my wrist up farther and the pain was too horrible. By this time I was sobbing as she kept slapping my bare bottom really hard. Then she finally stopped, but she said, "You want John's attention so bad - let's try this - John, look at this!" Then she pulled my hips open as wide as she could and aimed it right at him so he could see everything. I could see him at this point and he was just staring and he was actually smiling! I felt sick and betrayed and cried more deeply. Then my sister spanked me harder than ever about 5 more times and then she said, "I'll let you up, but only if you do just what I say." I was desperate and said, "Yes, anything, just please stop." She told me to take off all the rest of my clothes and turn around 3 times. I was really embarrassed because I had such tiny titties (AA cup just enough you could clearly tell I was developing) but a lot of untrimmed pubic hair which I planned to cut someday. Then she told me to stay in my room until our parents got home. Later that night she told me that if I told our parents what she did to me in front of John that she would get me alone and hurt me a lot worse the next time. Since my room was right over the living room I could here some of their talking through the heat vent. John was laughing and saying things like, "Wow, I had no idea she had tits and a bush," and "That was really fun. You think we could do that again sometime when your parents are gone?" Then they joked and laughed and imitated some of the "funny" noises and facial expressions I made when she was spanking and exposing me. I never did like my sister, but after this I didn't like John either and I was very embarrassed any time I had to see him.