I had this happen to me.
I was in the seventh grade and really had this crush on this eighth grade girl. I followed her around like a dog in heat and even after several rejections from her I just didn't get the hint to stop. One afternon after school I went to watch her play softball and after the game I guess she deceided to get me off her back for good. She came over to me and was talking real nice when of a sudden one of the bigger girls came up behind me and grabbed me in a hold I think is called a full nelson. I was sitting on the side of a small hill with my arms pinned behind me in this helpless position when the entire team came over to watch. The girl that I liked told me I was going to be shown a lesson that when you are told to get lost she ment it. She unbuckled my belt and unzipped my pants and the girl with the full nelson hold lifted me just enough to slid them down to my ankles. There I sat pleading with her to let me go and I would never bother her again. She reach over and ran her finger nails over the outline of my penis and as hard as I tried not to get a "woody" it was not working. She looked up at me and asked if I understood her message. I shook my head because my mouth was too dry to speak and finally managed to assure her that I would never bother again. As she turned to walk away one of the other girls yelled "Hey I want to see it" to which there was a big cheer. The full nelson girl dragged me to my feet and tighten her grip. Four other girls came over to me and put their fingers in the waistband of my underwear and announced that on the count of three down they would come. The group wasted no time in their count and the next thing I knew Miss full nelson was jerking me up and down and everyone was watching my "woody" bounce all over the place. I was told that if I told any of the teachers of their punishment of me I would be tied naked to the pole in front of the school and the fire alarm would be pulled. Not only didn't I tell any of the teachers, I didn't tell anyone for over twenty years.