When I was around 4, my friend's older sisters tied me to a tree in their front yard. The humiliation of being overpowered by them and put on display is something I've never forgotten. At the same time, I can recall having fantasies about being stripped naked in front of my class and mocked, with the class voting on whether I should be castrated, crucified and made to kiss everyone's feet on my hands and knees from a very early age. I don't remember whether they started developing before that real life experience or not. But it was all around the same time!