Charm and Dirty Bird are two characters from the Zoom Boom book series. Their names are quite the opposite of their character. Charm is very messy; whereas, Dirty Bird is very tidy. However, although they are different, they are still good friends. Be Tidy, or Not?, is a book that allows the readers to understand and appreciate the differences in their friends. It teaches children not to judge the differences, but to accept people as they are, allowing them to be tidy, or not.