A billionaire New York developer performed a lewd stand-up routine outside a divorce court after offering to give his estranged wife $1billion, a sum she has so far turned down.

Harry Macklowe, 79, is leaving his wife of 58 years Linda, 78, to move in with his 62-year-old museum president fiancée Patricia Landeau.

The real estate mogul seemed unconcerned about losing half his fortune as he cracked a series of 'take-my-wife-please' style jokes - including one about a vibrator - outside a Manhattan civil courtroom yesterday.

Harry Macklowe (left), 79, cracked a joke about a vibrator outside a divorce court after offering his wife Linda one billion dollars so he could get remarried to his fiancé Patricia Landeau (pictured together, right)

The real estate mogul seemed unconcerned about losing half his fortune as he cracked a series of 'take-my-wife-please' style jokes on Tuesday (pictured with Linda in 2014)

He discussed handing his wife half his fortune so that she will sign legal papers - although so far she has not agreed, according to Page Six.

'As soon as this divorce is over, I'm getting remarried,' he said after the hearing.

Macklowe shocked reporters by launching into a joke about a husband pleasuring his wife with a vibrator for 30 years.

In the gag, the wife realises he has been using a sex toy and says 'I knew it, you jerk, explain the vibrator!' to which he replies: 'Explain the kids!'

Macklowe - who is developing the world's tallest residential building - also complained that his estranged wife Linda never laughed at his witticisms.

He also moaned about her refusing his $1billion offer and served him with divorce papers in London last year.

Harry (left with his estranged wife Linda Macklowe) is engaged in a bitter divorce after the real estate mogul told his wife of 57 years he was leaving her for girlfriend Patricia Landeau (right)

Now Harry and Linda Macklowe, who do not have a prenup, are 'going to fight over everything,' a source said.

The source compared the divorce to the 1989 movie 'The War of the Roses,' which stars Michael Douglas and Kathleen Turner as a wealthy couple fighting over their possessions.

The couple's separation battle began when 78-year-old Harry went public with Landeau, who is president of the French Friends of the Israel Museum.

One source said that the couple's marriage began to fall apart when Harry was forced to sell his General Motors Building in 2008 to get out from a $7 billion debt.

Landeau (pictured) is the president of the French Friends of the Israel Museum. She and Macklowe reportedly met at a museum event

Macklowe is currently developing 432 Park Ave, the tallest residential building in the world (pictured)

Harry had been keeping Landeau in an apartment complex he owns on 737 Park Avenue.

Harry, who developed the Apple store on Fifth Avenue, is now spearheading development of the tallest residential building in the world, 432 Park Avenue.

He and his soon-to-be ex-wife were donors to the Israel Museum, where his new girlfriend is president, and were regular attendees of the museum's New York City gala.