A third-grader in south Florida found a very adult book in his school library this week.

Calvin McHenry checked out a graphic novel from the Hebron Heights Elementary School library in Parkland, Fla., and found a story he did not expect to read.

"I saw lots of people killing people and lots of kissing," McHenry said.

The book is called "Tank Girl One," a series about a pilot turned outlaw with a drinking problem who is often prone to violence and routinely finds herself in raunchy sexual situations.

McHenry's mother, Michelle, described the images in the book saying: "There was guns to heads, girls with girls, alcohol, sexual things that are just really, really bad."

The school board said the book arrived by mistake as part of a large shipment for the new library that contained over 7,000 books. The wrong book was even labeled with that title.

The book originally ordered by the school is called "Tank Talbot, A Guide To Girls." 

In a statement, the school board said the book "apparently slipped the attention of the personnel cross-checking and shelving the books due to the similarity in titles."

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