My mother's "morning rages". We were all terrified of her. She would just wake up in a terrible rage, thunder down the stairs and whoever got in her way was for it. I still shake when I think about being pinned up against the wall or gripped by the hair as she screamed and spat in my face.
There was the time when I was 11 and my brother 13, it was NYE and she lost it for some reason, I can't remember why. She made us pack up all our belongings, thundering about screaming while we did it that we'd never brought her anything but fucking heartache and she didn't want us any more. She made us load it all into the back of the car, drove us to my dad's house and dumped us in the garden in the rain. My dad was out drinking and the house was locked up. He worked in the middle east and didn't live there more than a few weeks a year anyway, the place was freezing, damp, practically derelict and not really habitable. She came back for us a couple of hours later and drove us home in silence, apart from saying "DS, you can leave whenever the fuck you like. Sadpaper - you're not going ANYWHERE."
There was one incident that was much less violent and physical than most of my worst memories but it makes me shake and gives me flashbacks, I was so utterly chilled by it. I was actually 18 and home from university. She was having one of her morning screaming fits at me, it had been going on about an hour, when one of the neighbours knocked on the door (about something unrelated). I opened the door and tried to speak normally but was visibly upset. They asked to speak to her so I called up to her, and she replied in a completely cheerful, happy voice, calling me "darling" etc. I glanced up at her from the doorway and the hatred in her face nearly knocked me over. Sorry if that sounds dramatic but it was so intense, like a punch in the stomach.