A childhood belief about fear of

When I was little my older brother believed an evil hand lived in the wall behind the toilet. He was convinced that when he was by himself and had to sit on the tolet seat that a tile on the wall would open like a door and the hand would come out and grab his privates. So whenever he had to do #2 he would take my brother and I with him and make us sit in the dark laundry hamper with all the stinky, dirty clothes. As long as he had someone with him the hand would never come out.