WritingWentz has written a book entitled The Boy With the Thorn In His Side, a story based on nightmares he had as a child. The title is a reference to a track on The Smiths' album The Queen Is Dead. Wentz explained that writing books serves as another mode of self-expression other than songwriting: "My inspiration and my ideas don't begin and end at the beginning and the ending of a song. It is too limiting." It was reported that he was to publish another book entitled "Rainy Day Kids". Years went by without any word on the book's progress and Wentz even expressed on his Twitter account that he didn't think it would ever come to fruition. However in February 2012, he posted a photo on his personal blog of what appears to be a rough draft of the book's manuscript, explaining that he is currently in the process of editing Rainy Day Kids and that it will be 40-50 pages longer than he originally expected. On December 13, 2012, Wentz revealed the cover for the book, now titled "Gray", on his personal blog. The cover states that he co-wrote the book with MTV News writer and former FNMTV co-host James Montgomery. Wentz went on to announce that the book was available for pre-order and would be released on February 26, 2013.In June 2009, it was announced Wentz was working on a five-issue comic book mini-series called Fall Out Toy Works, to be published by Image Comics. The idea was conceived by Wentz and designer Darren Romanelli. The plot is loosely based on the Fall Out Boy song "Tiffany Blews" and focuses on "a mysterious toymaker, a cyborg gal named Tiffany and a kid in a bear suit that looks lifted from the cover of Fall Out Boy's Folie รก Deux". With writing by Brett Lewis, and art by Sam Basri, the first issue was released on September 2, 2009.
