"Reading" himself to sleep

I went in Kevin's room one night to turn his light off and this is what I found. Books are his substitute for a binky. He used to fall asleep with a binky in his mouth, but with his love of books it wasn't too bad of a trade for the binky.
It looks like he takes after his mommy. If I can't fall asleep, this is similar to what I might look like after I get a book. It looks like books are the magic sleeping pill in our house.