A very funny story about dental hygiene by Jonathan London, author of the best-selling Froggy series. Whoopsy! Zack squeezes the toothpaste tube and squirts toothpaste all over the bathroom! Whoopsy! Zack forgets to brush his teeth before he visits the dentist—and his banana breath almost knocks over Dr. Potomus! If Dr. Potomus were grading, he'd give Zack a D for brushing and an F for flossing! Readers will laugh out loud as they (along with Zack) learn a thing or two about dental hygiene!