Horrid Henry's Underpants is an installment in the series focusing on a highly personal and potentially humiliating domestic issue, which is perfect fodder for Henry’s kind of humor. The book contains four new short stories, with the title story centered on Henry's underwear—perhaps a disastrous laundry mix-up, Henry being forced to wear something embarrassing, or Henry using his underpants for a mischievous scheme. The humor is classic Henry, relying on mild bathroom/body humor and the high-stakes humiliation of a domestic situation gone wrong. The story cleverly uses a mundane item to trigger a cascade of hilarious problems. Tony Ross’s illustrations perfectly capture the farce and Henry's outrage. The book is a relatable and funny exploration of the indignities of family life and the eternal embarrassment caused by parents and siblings.