Remember how your parents and grade school teachers kept chiding you to make sure you only colored within the lines? And you wondered why it was so important? Well, here's your answer. Peter Deligdisch's Between The Lines is a coloring book for experts that will put all of your colored pencil and crayon skills to the ultimate test.

Available as a print-at-home PDF for $7 from Peter's site, or a $10 paperback from Amazon, the 22 pieces of hand-drawn artwork in the book look like you might actually need a microscope if you have any hopes of actually coloring within the lines. But if you fail, thankfully you won't be facing a disappointed look from your grade one teacher, Mrs. Smith. [Peter Draws via Dude I Want That]