Ke$ha's recent claim that she had sex with a ghost before writing her latest single is arousing something from paranormal experts: skepticism.

The pop singer recently revealed to Ryan Seacrest that a randy romp with a male ghost helped give birth to her new song, "Supernatural."

"It's about experiences with the supernatural... but in a sexy way," she told Seacrest. "I had a couple of experiences with the supernatural. I don't know his name! He was a ghost! I'm very open to it."

There have been reports of people having sex with ghosts, according to paranormal researcher Eric Olsen, who co-hosts "America's Most Haunted," an online radio show.

"There is a tradition of entities known as 'succubus' and 'incubus,' which are malevolent spirits and their whole modus operandi is to seduce human victims and, in the process of consummating, steal or possess the victim's soul," Olsen told The Huffington Post.

Still, Olsen is skeptical about Ke$ha's alleged haunted humpings, which, if true, would make her a "spectrophiliac."

"There is a question as to what kind of visitation can you have while asleep," Olsen said, suggesting that the singer's otherworldly orgasms with some paranormal perv may just be part of a vivid dream.

"Unless you can observe them, you can't really differentiate between a vivid dream and an actual encounter," Olsen said.

Ghost researcher and HuffPost blogger Alexandra Holzer is also raising her eyebrows at Ke$ha's allegations of spirit sex, which, if true, would not be a hot and heated encounter.

"The people who report having sex with a ghost report feeling pressure on them and even penetration, but ghosts don't have warmth," Holzer told HuffPost. "When they're in the room, it's a very cold environment."

Holzer said the singer has been known for her ability to get publicity and suggests it wouldn't shock her if Ke$ha created the story in order to scare up publicity for the new CD.

"In terms of PR, it's an interesting and smart move," Holzer said.

Los Angeles-based ghost hunter Jayni Hartman won't dismiss Ke$ha's claims as strictly for publicity, but said that erotic apparition encounters are rare.

"Connections between ghosts and humans are more likely to be emotional, like the woman I met who could actually feel the spirit of her dead husband spooning her in bed and even smelled his cologne," Hartman told HuffPost.

GALLERY: HAUNTED ATTRACTIONS THAT MAY REALLY BE HAUNTED
  • Haunted Attractions That May Really Be Haunted

    This time of year, there are lots of haunted attractions where people pay good money to get the wits scared out of them by actors. But some of these haunted attractions may have some real-life spooks that are working free of charge.

  • Haunted Attractions That May Really Be Haunted

    The Dent Schoolhouse is a haunted attraction built on the premises of an old schoolhouse in Cincinnati, Ohio, that was supposedly the site of a mass murder.

  • Haunted Attractions That May Really Be Haunted

    The school opened up in 1894 and, legend has it, got shut down in the 1950s after it was discovered that a janitor named Charlie McFree killed a bunch of kids and put the bodies in the basement, according to owner Bud Stross.

  • Haunted Attractions That May Really Be Haunted

    Although Stross' employees have reported spooky encounters, he admits he was skeptical until two weeks ago when he had his own encounter with an apparition. "It was around three or four in the morning when I caught something in my eye, a lady in a black mask," he said. "It was my first ghost. We jetted out pretty quick."

  • Haunted Attractions That May Really Be Haunted

    The Pennhurst Asylum in Spring City, Pa., is built on the site of a former mental institution that between 1908 and 1986, housed as many as 25,000 mentally disabled people.

  • Haunted Attractions That May Really Be Haunted

    Owner Randy Bates sometimes sees strange flickers of light and says employees report having very creepy encounters, such as the man who had an experience that was so shocking that he ran out of a building so fast, he almost tore the hinges off. "He stayed away for three days," Bates said. "He came back, but won't talk about what he saw."

  • Haunted Attractions That May Really Be Haunted

    Some haunted places that charge admission don't feel the need to advertise the possibility of real spooks, such as the Cutting Edge Haunted House in Fort Worth, Texas, which owner Todd James says the attraction is built on the site of an old meat packing plant in an area of town once known as "Hell's Half-Acre."

  • Haunted Attractions That May Really Be Haunted

    Before James built a haunted house, he says there were lots of gunfights on the site. Although James hasn't seen any ghosts, a few of his staffers have run into a gangly ghost they have named "G.G." "It's very creepy," he said. "We have an artist that won't work in that section."

  • Haunted Attractions That May Really Be Haunted

    Despite this alleged haunted activity, James says he "can't confirm nor deny" the existence of ghosts and has never relied on the supposed real spooks to attract customers.