Although Ben Affleck's newest film, the David Fincher-directed thriller 'Gone Girl,' depicts a very intense and twisted plot, the 42 year-old actor managed to share some laughs about his raunchy sex scenes while promoting the flick.

Ben Affleck
Ben Affleck as Nick Dunne in 'Gone Girl'

While he was joined by his co-star, Rosamund Pike, Affleck recently spoke candidly with MTV News about appearing full frontal in the upcoming film, which is an adaptation of Gillian Flynn's 2012 novel of the same name, and even joked that his penis "looks better in 3-D."

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"I think there's some brief nudity in this movie," Affleck told MTV News' Josh Horowitz. "Director David [Fincher] said to me from the beginning, 'This is a warts and all movie. It can have no vanity. You have to see the naked underbelly of this character.' It's gotta be like in Europe, they just don't give a s--t about any of that stuff and they just play real people. So that was the spirit of the thing and we kind of stuck to that, me and Rosamund [Pike]. There is some brief, um, very brief nudity, I think."

"We're selling this on the penis!" Horowitz jokingly replied, which led Affleck to quip, "The penis is in there! It costs extra. It's IMAX penis! You've gotta pay fifteen bucks to see it in 3-D. It looks better in 3-D."

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"You should know it was very cold," the Oscar-winner added. "It was a very cold set. It was freezing. It was subzero."

Affleck stars in 'Gone Girl' as Nick Dunne - a conflicted man who is attempting to find his missing wife, as well as trying to prove his own innocence of this harrowing crime.