Stephen Hawking may be confined to a wheelchair, but that doesn't seem to keep him from making the rounds. The celebrated astrophysicist is a regular at a sex club in California, according to media reports.

The 70-year-old, almost completely paralyzed by a neurological disorder known as motor neurone disease , frequents a San Bernadino "swinger's club" called Freedom Acres , a long-time member of the club told Radar Online .

"I have seen Stephen Hawking at the club more than a handful of times," the member told the celebrity site. "He arrives with an entourage of nurses and assistants. Last time I saw him, he was in the back 'play area' lying on a bed fully clothed with two naked women gyrating all over him."

Does Hawking really like lap dances ? Not so fast, a University of Cambridge press officer told the Cambridge News.

"Lurid statements appeared on a website in America, but they are not true," Tim Holt told the paper. "This report is greatly exaggerated. He visited once a few years ago with friends while on a visit to California."

Twice divorced and the father of three, Hawking is director of research at the university's Center for Theoretical Cosmology and a well-known expert on black holes and the Big Bang. He earned worldwide fame with his 1988 best-seller "A Brief History of Time," though he made another big media bang last January when he called women "a complete mystery."

The center is "devoted to the development and testing of fundamental theories of the universe," according to its website.

And Freedom Acres? Its website calls it "one of the most dynamic and largest on premise Swinger club in the Los Angeles and Orange County with an active member list of couples and single ladies."