Tonight Middle Boy and I were talking right before he went to bed.  Younger Boy had been asleep for about 30 minutes.

All of a sudden Younger Boy was in the hallway asking something about light, but slurring his words.  I asked him to repeat himself and he said the same slurred words.  I couldn't understand so I told him that.  He got frustrated and went to his room.

I went in and he was on his bed still mumbling about the same thing.  Again I asked what he needed.  He said "A light switch.  I think that's what it is called."

Then he was asleep.

I believe he was sleep walking and talking during the whole thing.  It was really weird.