Yeah, its happened to me.

I hate it I have to learn to lock the door becuase my mom will walk into the bathroom when I'm taking my shower. It scares me.

Whats worse was when I was just brushing my teeth and my brother walk in the bathroom and tells me to leave becuase he has to take a dump. And when I don't get out immediatly he starts taking a dump in front of me and tells me to leave becuase he needs to concentrate.