Actually there is something like this going on with the Food and Drug Administration. The "Milk" industry wants only products that are from mammalian secretions to be labeled milk. This must be a truth in advertizing issue; no soy about it.
One more thing on this week's theme. I was also thinking about poop and naval architecture;the Poop Deck on a sailing vessel was the rear deck above the cabin, from the french word for stern, la poupe.