\'Hilarious and charming\' - Dav Pilkey, bestselling author of Dogman and Captain Underpants The 5th hilarious and fabulously festive Christmas adventure from everyone\'s favourite characters - Narwhal and Jelly!. \'Hilarious and charming\' - Dav Pilkey, bestselling author of Dogman and Captain Underpants The 5th hilarious and fabulously festive Christmas adventure from everyone\'s favourite characters - Narwhal and Jelly!