I was playing with the dog and running from her on my way to the bathroom. I rounded the corner to the hall and tried to make it there before she saw what room I was going into.
I glanced behind me as I grabbed the bathroom door to see if she was there. She wasn't but I heard her coming so I hurriedly tried to shut the door and WHAM!
I slammed it up against the side of my head and almost knocked myself out. Playtime over!