Lowered Expectations

I'm not sure what has Roman feeling melancholy post-nap, but here are three guesses:

1. He accidentally succumbed to sleep during quiet reading time.
2. He picked a book with very few pictures and a lot of small type.
3. He just found out what he should have expected all these years.

(It's What to Expect the Toddler Years)

Case closed on what put him to sleep. But now I have my own mystery to solve: where has that book been all these years?!