"Heavy Words Lightly Thrown," by British librarian Chris Roberts, tells us the true origins of our favorite nursery rhymes.
Being the annoying literalist that I am, I'm disappointed I didn't come up with the idea for this book first. Maybe I'll do a follow-up with some missing verses -- just give me an hour and access to Wikipedia.
But don't worry, parents, not all nursery rhymes are actually about prostitution or illicit sex. Some are about gay prostitution or illicit gay sex.