In high school, I had an odd fascination with kidneys. It all started when I read the Hitchhiker's Guide to the Galaxy "trilogy" by Douglas Adams. At one point in the book, the author (for humorous effect) makes reference to a "pair of fetid dingo's kidneys". I thought the expression was a colorful one, and so it stuck with me.
This is one of three cartoons in my online repository dealing with kidneys (see my October 1992 Dessins and this one), and in my opinion, Kidneys From the Heavens is the weirdest.