Matt Damon and Michael Douglas, stars of the upcoming Liberace biopic, discuss filming sex scenes together.

Damon plays Scott Thorson opposite Douglas as Liberace in HBO's Behind the Candelabra.

In a cover story for Hollywood glossy Entertainment Weekly, Damon said he appears in the film wearing nothing more than a metallic thong.

“Every Sunday night, this girl would come to my house and I would stand in my garage and I would hike my boxer briefs up to the crack of my ass and she would give me a spray tan,” Damon explained, adding that he wishes his wife had not seen his bronzed backside. “We've been through three childbirths, we've been in the trenches, there are no secrets. But I really wish she didn't see that. That's too much.”

According to the magazine, the film includes plenty of sex scenes between the men.

“Damon and Douglas both say that shooting a moment of passion is always awkward, no matter who's involved,” the magazine wrote.

“The scene where I'm behind him and going at him, we did that in one take,” Damon recalled with a laugh. “We do it. Cut. There's a long pause. And then you just hear [Director] Steve [Soderbergh] go, 'Well … I have no notes.'”