The zoo animals are not themselves. The gnu is blue. The elephant is white as a sheet. And the snake is purple with rage. How are the other creatures doing? Find out in this extremely colorful tale! Series Information Idiom Tales are super-funny stories designed to introduce kids to dozens of must-know idioms. What are idioms? Idioms are colorful expressions that mean something different from what the actual words say, such as dog-tired or in a pickle. Why is it important for everyone to learn idioms? Because these common sayings help kids "crack the code" of the English language and become better readers, writers, and communicators.