Wacky Wednesday is a book by Theo. LeSeig (aka Dr. Seuss) with pictures by George Booth. The concept of the book is that a boy wakes up and realizes that his whole town has gone "wacky". Birds are chasing cats, shoes show up everywhere but on people's feet, and misspellings abound. Each picture has an increasing number of wacky things, beginning with one shoe on the wall, and ending with twenty wacky things.
On Wednesday, everybody in kindergarten got wacky, including the Mrs. Wood, Mrs. Fowler, Miss Patsel, Mrs. Larremore!