I'm not 100% sure, it's never happened before, as far as I know, but it's the only explanation I can think of.
So at some point in the middle of the night, there is a loud crashing sound. It's me, I've knocked a bunch of stuff off my desk. So I kneel down and start groping around on the floor in the pitch dark thing to pick it up. Eventually, I realize that I can't see anything and I don't even know what I'm looking for, so turning on the light might be a good idea.
So I feel my way over to where the lightswitch should be, skillfully avoiding the box of work uniform I've had on the floor for the past three weeks. To my consternation, the wall with the switch isn't where I thought it would be. So I move closer, singing my arms around. I find the shelves to my right, no lightswitch. Instead, I climb over the end of my bed and crawl over to the pillow end and switch on the bedside lamp.
It is at this point that I realize I am in my bedroom and not the spare room. Why I thought I was in the spare room, I have no idea. I never sleep in there. Having figured all this out, I switch the light back off and go back to sleep, leaving all the stuff all over the floor, for me to find the next day.
That is how I know the whole thing happened at all. Well, that and my sleep cycle app recorded activity at about 3am. The only thing I can think of is that I was sleepwalking, and the crash of the stuff falling on the floor woke me up.
Hopefully it won't happen again, even though everyone did think it was hilarious when I told them the next day.
In other, non sleepwalking related news, Civil War is awesome. I would ramble on about it, but I'm going to try to get an earlyish (the right side of midnight) night, because I still have the cold of doom, and still can't hear out of my left ear, and my right is wonky too. Which made work interesting today. Hopefully sleep will sort it, as long as I don't spend the night stumbling around the house knocking things over.
I'll ramble about the movie tomorrow though, no doubt!