He dishes on the "completely surreal" experience of filming with the Real Housewives.

Mar 23 - The Dish

What's it like to team up with Lady Gaga for one of her over-the-top music videos? For Andy Cohen, it was a "completely surreal" experience.

The WWHL host and the Real Housewives of Beverly Hills are featured in her epic clip for "G.U.Y.," which hit the web last night. The video portrays Gaga as a wounded angel who is nursed back to life by a cadre of sexy women, buff dudes and the Real Housewives; Andy plays the role of a mythic God who witnesses all the action from the heavens.

So how was the experience?

"Being directed by Gaga was completely surreal," Andy tells the Dish. "We were singing the words to her song together. She was giving me attitude, direction: 'Be sexy! Be strong!'"

Andy even had to doff some of his clothes while filming his portion. "I was shirtless in front of a green screen, but you only see my face," he says. He adds that filming was done quickly. "I shot my part, which is small, seconds, the morning after the RHOBH reunion, and the Housewives shot theirs in the days following." The women are billed as the Real Housewives of Beverly Hills Band; their appearance was shot at the massive Hearst Mansion in San Simeon, California.

Andy's not revealing everything about his role, however. "Gaga had an incredible reasoning for casting me as Zeus," he says, "but you'll have to ask her to explain because it's better coming from her."

Watch Lady Gaga's epic "G.U.Y." video.

Andy filmed video of his reaction to seeing the video—watch the clip below.