The Mare's Nest

If you found a nest made by a mare, that would be a terrific discovery. Mares, however, don't make nests, so therefore there is no such thing as a terrific discovery. In Logic 101, that's a false corollary or misleading assumption or some such term. And if you THINK you've found a mare's nest, you're completely wrong, and what you've come upon is a twisted, confusing utter mess.