Those looking forward to the impending release of “Fifty Shades of Grey” are likely to see the film for its sexy scenes, hot stars and… “unusual behavior”?

The MPAA has deemed “the strong sexual content including dialogue, some unusual behavior and graphic nudity” worthy of an R rating — although readers of the racy book might wonder how it’s possible to depict most of the action without getting closer to an NC-17 rating. Based on E. L. James’ risque bestselling romance novel, the film has a built-in fanbase of devotees.

Jamie Dornan, who co-stars in the film opposite Dakota Johnson, told GQ magazine that he researched the role of Christian Grey by going to sex dungeons and reading about bondage and BDSM.

“If people are into that they’re into that,” he said. “By the way, if people make such a hoo-hah about the violence against women aspect of it, it’s far more common for men to be the submissive. And it’s consensual! There’s weirder sh– than that. I think plane spotting is far weirder than S&M. That I really don’t get. I can understand why people are into S&M, but standing outside Heathrow Terminal 5 waiting for Ryanair to come in?”

The Focus Features movie will take it all off February 13 when it opens in theaters.

Popular on Variety

More from Variety