From the screenwriter behind family favorites like Despicable Me and Dr. Seuss' The Lorax comes a hilarious, rhyming picture book romp about knowing when to GO Clayton Parker can't wait for his field trip to the zoo. When his teacher encourages the class to go before they go . . . Clayton rushes onto the bus and doesn't give it a second thought. Little does he know . . . Clayton Parker really really REALLY has to pee. He discovers this as soon as he gets to the zoo. And he panics! Clayton needs a bathroom, and he needs one now! The first one he finds is broken. The next one isn't much of a bathroom at all. What will Clayton do? A cautionary tale for the procrastinator in us all, this hilarious picture book romp will have readers vowing alongside Clayton Parker: "Before I go out anywhere, I'll always try to pee."