I had one yesterday. I left a store, got into my car and started driving, and when I came to the street I needed to turn on to, I thought “What? What the fuck am I doing HERE?”
My brain was on auto-pilot, and at that moment I had thought that I had left a store 40 miles away, back where I used to live, and I had expected to see a different street in a different town. It felt like waking up from a dream. And I STILL feel a little disoriented today.