It’s a dream
Stupid brain! I have a habit of sitting outside and reading before bed, but I often do it until I’m really sleepy. Now, my subconscious has decided it would be funny to screw with me. With great regularity in the last couple of weeks, I’ve started dreaming that I’m outside reading and dozing off. So I think, “Gee, better not fall asleep outside.” and shake myself awake and close the book, only to find myself standing beside my bed. Stupid brain!