Nicole Kidman infamously urinates on Zac Efron in "The Paperboy," but there's one thing she flat-out refused to do.

Speaking at a press conference at the New York Film Festival, director Lee Daniels revealed that Kidman would not call a black cast member the N-word. Kidman, who the Los Angeles Times describes as "looking slightly annoyed," explained that she felt as though the slur didn't "feel right for the character."

"I have a son who's African-American and I just didn't feel it was right," the actress added. "It wasn't right."

Kidman's turn as Charlotte Bless has earned rave reviews from critics, many of whom were simply shocked by her daringness in the film. In addition to urinating on Efron (his character has an unfortunate encounter with a jellyfish), she also participates in a couple of wild sex scenes, including one in which she pantomimes performing oral sex on an inmate (played by John Cusack).

The urination scene, though, has emerged as the biggest story to come out of the movie. Daniels explained the shooting to GQ: "First of all, it was really hard to shoot. It was the third day. The first scene we shot was the sex scene with John [Cusack and Kidman]. I like to get that right out of the way. The second day was the telepathic sex scene in the prison. And the third day of shooting was the piss scene."

He also said he thought it was too much to keep in the film, but Kidman insisted. Kidman -- who recently appeared topless on the cover of V Magazine --
apparently didn't want the work to go to waste.

Daniels told HuffPost Entertainment that he thinks audiences will be surprised by the film, especially given that it's his follow-up to "Precious," the 2009 movie which garnered six Academy Award nominations.

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