This phrase could apply to a lot of things it seems. The latest thing is that I read a text message from Lee and replied to it in a coherent way, all in my sleep, only to know nothing of it the next day. Freaky.
In the past, I have also stopped my alarm clock, and instead of simply pressing off or snooze, as would be easiest (particularly when asleep), I set it for three hours later. Freaky.
If I could teach myself to work in my sleep or do something useful, that would be good, but at the moment I'm more afraid of what I'll do next!