When I was 4 my mom would drop me at a "friends" house where I would wait for a school bus, here's the catch, her "friends" had recently lost thier son to some disease and I guess they decided to take it out on me. They would hit me and tell me I was bad, and when I would cry, they would lock me in a barn and let the school bus leave with me in a dark barn for the entire day (I also remember them periodically coming in to hit me and I seem to remember some sexual abuse, but It's all a little fuzzy. My parents confronted the people as the school would call when I wouldn't show up, but did nothing. This was the worst of many "experiences".