Liam Neeson is spilling secrets about filming a revealing nude scene in The Naked Gun.

“We see your bare bottom in this movie briefly,” Stephen Colbert told Neeson, 73, on the Wednesday, July 30, episode of The Late Show.

Neeson, however, corrected the 61-year-old talk show host about whether he actually stripped down on set.

“I wish you could say it’s mine. It’s not,” he said. “It’s in the contract [to use a] stunt arse.”

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Neeson then tried to dodge Colbert’s follow-up questions about whether he “got to pick the butt” that was seen on screen.

“Stephen, let’s change the subject,” Neeson said.

Neeson and Pamela Anderson play a couple in the upcoming reboot of the 1988 crime movie of the same name. In addition to nearly going nude, Neeson filmed several intimate scenes with Anderson, 58.

Pamela Anderson and Liam Neeson in ‘The Naked Gun.’ Courtesy of Frank Masi /© Paramount Pictures / Everett Collection

“There’s a threesome,” he told Colbert. “One of the participants is very cold.”

The Naked Gun was the first time that the action star worked with an intimacy coordinator in order to tackle the steamy scenes.

“It was a little bit strange,” Neeson explained. “Well, Pamela and I knew what to do. [The threesome scene] was a first. That had to be specifically choreographed.”

Playing lovers on screen also fostered a real-life connection between Neeson and Anderson.

“Pamela and Liam are dating,” a source exclusively told Us Weekly in July, a

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dding that the two actors “always had chemistry while they were filming and their friendship naturally developed into more.”

The insider added, “They are both shy and have tried to stay private, but the spark between them is obvious.”

Neeson was previously married to actress Natasha Richardson, with whom he welcomed two sons before she died in a 2009 ski accident. She was 45. Anderson, for her part, shares two children with ex-husband Tommy Lee.

Neeson and Anderson have yet to discuss their budding romance, but they had a blast filming The Naked Gun together.

“He has so much charm and so much charisma that you, kind of, just fall into it,” Anderson recently told The New York Times of working with Neeson. “I can’t explain it because I’ve never experienced it before. To do comedy, it gives you a lot of energy when you’re in something so joyful and silly. Liam has done over 100 movies, and I hope he’s inspired to do even more.”

Neeson was equally inspired by Anderson, especially as she shared her personal passions between takes.

“She loves to cook [and] she loves to bake,” he said on The Late Show. “She made me sourdough loaves during the shoot [and] bran muffins, which I love.”