Weird Toenails

Every now and then, more often then I'd like to admit, I run across a patient with something so peculiar that I just have to snap a picture of it. Check out the pattern of growth to this toenail. What do you think it is?

It's so intriguing, like if it wasn't on a body part it might be a cool mixed media art to put up in the living room to act as a conversational piece. Or not.