"A Day in the Life of Marlon Bundo" is a children's book written by Jill Twiss, with illustrations by EG Keller. The book was published in March 2018 and became quite popular for its charming story and its underlying message of inclusivity and acceptance.

The book tells the story of Marlon Bundo, the real-life pet rabbit of Vice President Mike Pence and his wife, Karen Pence. However, the book takes a whimsical and fictional approach to Marlon Bundo's life. In the story, Marlon Bundo is a bunny who falls in love with another bunny named Wesley. The two bunnies want to get married and live happily ever after, but they face a problem: the Stink Bug, who is in charge and does not want them to marry because they are both boys.

The book's message of love and acceptance is clear, promoting the idea that love is love and that everyone deserves the right to be with the person they love, regardless of gender. It was seen as a response to some of the policies and attitudes of the Trump administration, which was in power at the time, especially regarding LGBTQ+ rights and marriage equality.

"A Day in the Life of Marlon Bundo" quickly gained popularity and received positive reviews for its message of inclusivity and its appeal to children. It also attracted attention because it was released around the same time as a book written by Vice President Mike Pence's daughter, Charlotte Pence, about the real-life Marlon Bundo. Charlotte Pence's book did not include the same LGBTQ+ themes as Jill Twiss's book.

The popularity of "A Day in the Life of Marlon Bundo" extended beyond its content, as it was seen as a symbol of resistance against the potential censorship or suppression of LGBTQ+ voices and stories. The book's publication and reception highlighted the importance of freedom of expression and the role of literature in promoting diversity, tolerance, and acceptance.

In summary, "A Day in the Life of Marlon Bundo" by Jill Twiss is a children's book that promotes inclusivity and acceptance, with a focus on LGBTQ+ themes. It gained attention and popularity for its message and was seen as a symbol of resistance against censorship or discrimination.