An intrepid prankster has inserted a series of fake self-help books at their local bookstore. But this person didn't stop at just the spine -- they created some amazing book jackets and sleeves as well. Jeff Wysaski, who runs the Tumblr Obvious Plant, even included separate US and Canadian prices. How's that for dedication?
So Your Son Is A Centaur
The Beginner's Guide To Human Sacrifice
You can check out the full gallery here.