Who turned the world upside down?

Last night when I went into check on Ethan, he had managed to spin himself 180 degrees in his crib. Usually he goes to sleep with is head near the zebras in his bumper pad. As you can see in the photo, his head isn't there any longer! After feeding him last night, I put him to bed as he's usually positioned. The little boy managed to spin himself again, so I snapped a picture of our "mover and shaker".