"And if those librarians at Lake Landing aren't impressed, then...then, then I'm a jack-stacking leafhopper."
-Tweezel (The Slaughterer's Quest)

Leafhoppers were jumping insects found in the Deepwoods. Tweezel was so very sure of his varnish made from Mole-Glue that he declared that he'd be a jack stacking leafhopper if the librarians at Lake Landing were not impressed. They were, however, impressed and the Second Age of Flight began.