When he sees a spirit, he says that it's just a piece of undigested beef causing him to hallucinate.

FORBES: Malthus And Scrooge

The Pringles Light chips are made with olestra, a synthetic fat substitute that has zero calories and passes through the body undigested.

FORBES: Why Eating Fake Fat Can Make You Real Fat

The trouble for Reno and the FBI is not so much with what's out there as with the facts that may still be undetected and undigested in their files.

CNN: The return of Waco

The paper, which is turned into wrapping paper, wine bags, journals and Christmas ornaments, is thick, textured and occasionally flecked with small stones and hair-like fibers because 70% of what an elephant eats can pass through its body undigested.

FORBES: Waste? Not!

Yet much of the writing seems undigested or glib ("Corruption is why we win, " a Texas oilman tells a lawyer) and self-enchanted in its depiction of an American government -- read the Bush administration -- willing to do anything to anyone for the sake of oil.

WSJ: Glib Lines in the Sand