I think I might have this figured out. I was trying out a new Chromebook that the wife had bought me and I think I remember trying to sign in here on it. I quickly decided I didn't like it and my nephew needed it for school so I gave it to him. I can't be sure of the exact date, but I think it might have been around that time. At least I had the sense to log out of it. It was the middle of the day, so I was sober, but the whole episode was so brief and long ago I forgot about it.