Turns out The Boy "snuck" into our room around midnight. He came around to my side of the bed, as per usual, and started to crawl into bed with me. I attempted to be accomodating and rolled onto my back to help. He made it halfway across, ran out of energy, and fell asleep. His legs were hanging off the side of the bed, and his upper half was splayed across my midsection, thumb in mouth (of course), asleep. Apparently, we'd been like that for an hour or so.
Aren't kids wonderful?