Ke$ha Once Had Sex with a Ghost

Congratulations, Ke$ha. We didn't think it was possible for you to shock us anymore.

You've already photographed yourself peeing in the street, after all. And Tweeted a naked self-portrait.

But in an interview with Ryan Seacrest on KISS FM, the singer revealed that the track "Supernatural" was penned about a specific sexual experience.

Between Ke$ha and a ghost.

“I don’t know his name,” she said of her partner. “He was a ghost! I’m very open to it.” Ke$ha appeared on the talk show in promotion of her new album "Warrior," which comes out on December 4.

“There are so many weird topics on this record, from having sexy time with a ghost to getting hypnotized and going into past lives,” she teased. “I just really wanted the theme of this record to be the magic of life.”

The artist continued, saying she drew on some more earth-bound endeavor as well: “I went on a spirit journey by myself. No security guard. No managers. I just went around the world and lived on a boat.

“I was in Africa rehabilitating baby lions. I went diving with great white sharks, and just went on this crazy spirit quest. I got hypnotised, and I just really wanted this record to be really positive, really raw, really vulnerable."