After the Thud

I heard a loud thud from upstairs yesterday afternoon. I jogged up the stairs, only to hear nothing from my bedroom (where both kids wanted to nap). No whining, no crying. It was strange. But, since nap time wasn't technically over (for my own sanity, it doesn't officially end until 4:00 pm), and since I didn't hear anything from the room, I didn't go in to check. However, at 4:00, this is what I found:

Here's the long view:

He's never even fallen out of his own bed! And, I'm amazed that not only did Brandon not wake up, but he didn't wake up his light-sleeping sister sleeping only a few feet away.