noun. Not a synonym for diddly-poop. This word has no known mathematical properties.
Real citation: “Well, what a fine mess of poo-diddly-oop I made of that one!”
(July 12, 2006, http://www.fundamentalforums.com/archive/index.php/t-8437.html)
Made-up citation: “Each pile of poo-diddly-oop is a precious part of the divine plan, a sacred mound of manure that no earthly turd-herder should disturb. We must not question or pooper-scoop God's will—except for that pile I stepped in, which is bullshit.”