A “disabled” Staten Island woman’s quest for lifetime maintenance from her husband went belly up after he unveiled her secret life as a belly dancer to the judge.

Despite claims that she couldn’t work, rarely left home and rarely socialized because of injuries from a 1996 car accident, Dorothy McGurk, 43, was belly-dancing at home and in Manhattan for hours a day — and then spending several more hours a day blogging about.

“My belly dancing is the reason why I adore myself so much . . . That comes from hours of dancing and classes . . . It’s been a three-and-a-half year journey of realigning my spine (and hardware), body, mind and spirit with belly dancing for me,” the 6-foot-tall redhead wrote.

When asked by a Facebook friend why she wasn’t posting pictures from her performances, she wrote, “Gotta be careful what goes online, pookies. The ex would love to fry me with that.”

Brian McGurk, 37, didn’t need the photos — the blog postings were enough.

“Wife’s belly-dancing was brought to this Court’s attention in February 2009, when Husband attached a series of Wife’s Internet blogs as exhibits to motion papers,” Justice Catherine DiDomenico wrote in a ruling that was printed in yesterday’s New York Law Journal.

“At trial, wife incredibly testified that she stopped belly-dancing in 2008, notwithstanding her own blogs, which reveal otherwise.”

The dancer, on disability, had been seeking lifetime alimony of $850 a month from her estranged postman hubby, saying injuries she suffered in a 1997 car accident left her unable to work.

The judge said she believed the hubby’s testimony that from them on, he “did all of the cooking, cleaning, and laundry in addition to holding a full time job . . . The Court credits husband’s testimony that wife slept all day.”

The judge denied her request for the $850 a month lifetime maintenance and instead awarded her $400 a month for two years.

She also awarded the hubby 60 percent from the sale of their house and thousands in legal fees for her “dilatory tactics.”

Additional reporting by Erin Calabrese