A Republican lawmaker from Vice President Pence's home state is hitting HBO host John Oliver over the "Last Week Tonight" host's release of a children's book spoofing one about the Pence family rabbit.

Rep. Luke Messer Allen (Luke) Lucas MesserK Street giants scoop up coveted ex-lawmakers Yoder, Messer land on K Street House GOP to force members to give up leadership positions if running for higher office MORE (R-Ind.) wrote in a post that it was "sad to see" the HBO host "belittle Mike Pence Michael (Mike) Richard PenceMcConnell locks down key GOP votes in Supreme Court fight Momentum growing among Republicans for Supreme Court vote before Election Day Sunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election MORE's faith and mock a children's book the Pence family wrote together."

Oliver's book, “Last Week Tonight with John Oliver Presents a Day in the Life of Marlon Bundo," features the Pence family rabbit, Marlon Bundo, meeting a fellow male rabbit before being told (to their dismay) by a stink bug that boys must marry girls.

“There are a few small differences between the two books. You’ll notice right away that our rabbit has a bow tie, so there’s that,” Oliver said on his show Sunday, after criticizing Pence sharply on LGBT issues. “Also, our story is about Marlon Bundo falling in love with another boy rabbit, because our Marlon Bundo is gay.”

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The book spoofs “A Day in the Life of the Vice President,” written by Pence’s daughter, Charlotte, and illustrated by second lady Karen Pence Karen Sue PenceThe Hill's 12:30 Report - Presented by Facebook - Biden, Pence elbow bump at NYC Sept. 11 ceremony The Hill's Morning Report - Sponsored by National Industries for the Blind - Trump seeks to flip 'Rage' narrative; Dems block COVID-19 bill Pentagon, Trump, Biden to mark 9/11 anniversary MORE, which made it to No. 5 on the Amazon bestseller list this week.

Oliver's book was the No. 1 bestseller Monday afternoon, passing former FBI Director James Comey James Brien ComeyDemocrats fear Russia interference could spoil bid to retake Senate Book: FBI sex crimes investigator helped trigger October 2016 public probe of Clinton emails Trump jabs at FBI director over testimony on Russia, antifa MORE's unreleased book "A Higher Loyalty: Truth, Lies, and Leadership."

Messer, who is running for Senate against incumbent Sen. Joe Donnelly Joseph (Joe) Simon DonnellyNames to watch as Trump picks Ginsburg replacement on Supreme Court Momentum growing among Republicans for Supreme Court vote before Election Day Barrett seen as a front-runner for Trump Supreme Court pick MORE (D) in the state Pence represented as governor for four years, did not take the joke in stride.

"More proof of how out of step media elites are with most Americans," he wrote on Facebook.

Pence, a conservative Christian, is a top target of the LGBT community. Last month, he was called out by the first two openly gay U.S. Olympians.