“It's a dangerous business, Frodo, going out your door. You step onto the road, and if you don't keep your feet, there's no knowing where you might be swept off to.”
-- J.R.R. Tolkien, The Lord of the Rings
Read a book with water on the cover, or where someone turns on the waterworks (i.e., cries) because of an emotional event.
I'm going with a book with water on the cover.