Have you ever been so not-awake as you walked around that blinking your eyes caused an auditory sensation? Right after the bad part of a bad dream last night my Darling Wife woke me up and told me she thought one of the kids was crying. I got up and walked to their room, and listened by the door. Silence. I went in and found only solid-sleepers.
On the way to their room, when I blinked as I was walking,there was a fuzzy noise with each blinking of my eyelids, I kid you not. The noise I heard as I walked back to the Master Suite was an airplane. An airplane with a strange engine noise that sounded like a child crying.