This is one of a series of delightfully humorous tales for beginner readers from the award-winning creator of Don't Let the Pigeon Drive the Bus!Gerald is careful. Piggie is not. Piggie cannot help smiling. Gerald can. Gerald worries so that Piggie does not have to. Gerald and Piggie are best friends. In My Friend is Sad, Gerald is sad. How can Piggie be happy if Gerald is sad? Told entirely in speech bubbles with a repetitive use of familiar phrases, this highly original book is perfect for children just learning to read.