What Was The First "Adult" Book You Read?

Nowadays, the definition of books for kids and grownups is pretty vague. Lots of people over 30 read YA fiction for pleasure, while plenty of adult writers write novels aimed at younger readers. In the meantime, the "intermediate" stage — a massive category when I worked in book retail a few years ago, and a huge… » 1/12/15 7:55pm 1/12/15 7:55pm