Dr. Seuss was crafty.

It can be said the last thing Dr. Seuss ever did was write children's books. Take Yertle the Turtle. That's about Hitler. (Although it's Hitler minus the Holocaust. There's no real subtle way to reinterpret that into a children's book.)

And The Butter Battle Book? That's about the Cold War. (Although not about how cold the butter is in your Frigidaire.)

Mental Floss Magazine has a rundown of ten stories behind Dr. Seuss's books. The Lorax? About environmentalism. Horton Hears a Who!? Often used in abortion arguments. If I Ran the Zoo? It's responsible for first publishing the word "nerd."

Nerd? Really, Dr. Seuss? Really?? Well, at least you knew your target audience.