It's April Fools' Day, and Gilbert is looking forward to playing tricks on his friends. Unfortunately he's the one getting tricked by everyone else, including Mrs. Byrd! But the worst prankster is Lewis the bully.
Can Gilbert finally outwit Lewis with the best trick of all?
Diane deGroat is the illustrator of more than 120 children's books and the author-illustrator of bestselling books about Gilbert, including Ants in Your Pants, Worms in Your Plants! (Gilbert Goes Green); April Fool! Watch Out at School!; Mother, You're the Best! (But Sister, You're a Pest!); Last One in Is a Rotten Egg!; and the New York Times bestseller Roses Are Pink, Your Feet Really Stink. Diane lives in Amherst, Massachusetts.