I didn't know that : from "ants in the pants" to "wet behind the ears"--the unusual origins of the things we say / compiled and edited by Karlen Evins.
"This book was previously published by the author in two separate volumes entitled I didn't know that, vol. I copyright 1992 by Karen Evins and I didn't know that, vol. II copyright 1993 by Karen Evins"--T.p. verso.