The worst thing my mother ever did to me is when I was six. Since she thought the men's room was full of child molesters, kidnappers and killers, she told me into the women's room with her when we were at the theater. Unforunately, one time she took me in and on her way out was a girl in my class at school.
Of course she told everyone at school, and had I lacked a conscience I would have killed her.
Even today I remember her name. Not that I will ever mention it to anyone.