Fetish expert says Philly's "Swiss Cheese Pervert" could be dangerous.

SWISS CHEESE, STINKY feet, chocolate pudding: There's no telling what gets someone's blood pumping below the belt.

But one expert says that when a sexual fetish becomes an obsession - when it literally gets exposed to the public as it has for Philadelphia's "Swiss Cheese Pervert" - the combo of fromage and adrenaline can be an unsavory mix.

"Yeah, it's pretty weird, but with food, who knows. It's surprising, but it isn't shocking," said Gloria Brame, a certified clinical sexologist from Georgia who wrote her dissertation on "kink and fetishes."

"It's not about the cheese, though. It's the criminality of it that's worrisome."

On Saturday, Philadelphia magazine published the name and photo of a 41-year-old Norristown man who matches the description of a man who's been seen recently holding a slice of Swiss over his penis inside a car around Mayfair. The man identified by the magazine, along with several of his relatives, could not be reached for comment yesterday, and his Facebook page appeared to have been deleted.

The Philadelphia Police Department's Special Victims Unit said it was aware of the magazine report yesterday, but the investigators handling the case would not be back in until this morning.

The "Swiss Cheese Pervert," expert Brame said, is "definitely somebody the cops to need to find" because he needs more than cheese and a willing partner to feel satisfied.

"If this guy really wanted to, there's no hooker in the world who would turn down $50 to [pleasure a guy] with Swiss cheese," she said.

The man identified by Philadelphia magazine has been charged with soliciting prostitution on two occasions.

Long before women reported a man dangling slices of Swiss over his groin here in Philadelphia, a man with a Swiss-cheese fetish was freaking people out on dating sites such as OkCupid.com and Match.com, asking them if they'd be willing to do sexual favors to him, with one or more slices of cheese, for $50.

A Philadelphia Craigslist ad from 2008 that's been shared all over the Internet allegedly included pictures and a long explanation of how sexual gratification and Swiss cheese have become forever intertwined for the author.

"My fetish grew out of desperation for sex with a woman," the author wrote. He also said, "I am lucky I never became a rapist."

It's not clear whether the man who's grown infamous online is the same one exposing himself here in Philadelphia, but Brame said she's never heard of a Swiss-cheese fetish, and she's heard them all.

"Anybody can develop a fetish around anything," she said. "There's no website or newsletter for Swiss-cheese fetishes, though."