Sometime last year I was at home, just watching TV in my bedroom in the middle of the night, with most of the lights out obviously. I thought I heard something that sounded like someone opening a window in the bathroom that scared the hell out of me. I ran for the stairs and didn't think to just run down. I had like jumped 6 or 7 stairs and, when I landed in the middle of the stairway...slipped...
Caught myself by grabbing onto the railing though, would've been nasty otherwise. After a little while of hearing nothing I went back upstairs, turned on most of the lights, and checked where I had heard the window at. Turns out the wind had knocked down the bathroom window I hadn't closed all the way...
Figures to have a house that is like a bazillion years old...>_>