Diary of a Wimpy Kid is a children's book series written and illustrated by Jeff Kinney. The series focuses on the life of a middle school student named Greg Heffley. The books are written in a diary format and are filled with humor and illustrations. The series is not considered to be a tall tale. Tall tales are stories that are exaggerated and are often told to entertain people. While the Diary of a Wimpy Kid books are humorous, they are not necessarily exaggerated. The books are based on the author's own experiences and are meant to be realistic.