As a young girl, Chelsea Clinton learned to keep secrets. But she also learned to call the Secret Service 'pigs.'

That's a claim from former White House florist Ronn Payne, retold in a new book based on interviews with more than 100 members of the presidential mansion's domestic staff.

As he walked into the second-floor kitchen one day, he saw Chelsea talking on the phone. A member of her Secret Service protective detail came in behind him to take the Clintons' only child to school.

'Oh, I’ve got to go. The pigs are here,' she told her phone pal, according to Payne – using a 1960s-era epithet for law enforcement.

'Faced with an angry agent who reminded her in no uncertain terms that it was his job to protect her, Chelsea replied: 'Well, that’s what my mother and father call you.'

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'PIGS': Chelsea Clinton (right, in 1995) allegedly referred to the Secret Service with an offensive counter-culture epithet, and said she learned it from her parents

SHAME: Chelsea (center) accompanied her parents and their dog to the Marine One chopper in 1998, just a day after the president admitted to marital infidelities

Chelsea now shares leadership of the Bill, Hillary and Chelsea Clinton Foundation, which wouldn't respond to questions about the 'pigs' episode

While the political world was focused Tuesday on Republican Rand Paul's presidential coming-out party, Politico published an excerpt of 'The Residence: Inside the Private World of the White House.'

The book that could prove problematic for Democratic front-runner Hillary Clinton, the former first lady, senator and secretary of state.

The Bill, Hillary and Chelsea Clinton Foundation did not respond to a request for comment about whether Payne's recollection is accurate. Chelsea now runs the family philanthropy along with her parents.

But that snippet from America's hidden history is just the tip of the iceberg.

Skip Allen, a Clinton-era White House 'usher' – a high-ranking butler – said in the book that Bill and Hillary were 'about the most paranoid people I'd ever seen in my life.'

'PITCHED BATTLES': Hillary (left, with the former president in August), once threw a 'heavy' object – believed by staff to have been a table lamp – across the room, Kate Andersen Brower writes in her new book (right)

Allen, who served under multiple presidents, told author Kate Anderson Brower that he preferred to work for first families he genuinely liked, rather than pretending he had warm feeligns for his employers.

'But we pretend very well,' he added.

Another usher, Chris Emery, found himself uncerimoniously fired for helping former first lady Barbara Bush with technical computer questions. He had taught her how to use a PC during President George H. W. Bush's one term in office.

When the Clintons saw a log of his calls, they feared he was leaking their secrets to the Bush clan – something he insists he never did.

'I was out of work for a year,' Emery says in the book. 'They ripped the rug right out from under me. You wonder what they'd do to someone who's really powerful.'

At the height of the sex scandal that saw Bill Clinton admitting he frolicked with intern Monica Lewinsky in the Oval Office, one White House maid was astonished to find the first couple's marital bed drenched in blood, according to Brower.

Explaining an injury, the president claimed publicly that he had 'hurt himself running into the bathroom door in the middle of the night.'

But one White House domestic told Brower that 'we’re pretty sure' Hillary 'clocked him with a book.'

DISPUTES: White House domestic employees said they heard Hillary 'clock him with a book' during the Monica Lewinsky scandal

'There were at least 20 books on the bedside table for his betrayed wife to choose from,” she writes, 'including the Bible.'

For at least three months in 1998, according to 'The Residence,' the leader of the free world 'slept on a sofa in a private study attached to their bedroom.'

'Most of the women on the residence staff thought he got what he deserved.'

For three or four months [Bill Clinton] slept on a sofa in a private study attached to their bedroom... Most of the women on the staff thought he got what he deserved Kate Andersen Brower

And Brower;s research surfaced White House residence staffers who described how the first couple sometimes got into 'pitched battles' during their eight years in Washington, 'shocking staff with their vicious cursing.'

Payne once came upon two butlers listening to a particularly aggressive dispute through a doorway. He heard Mrs Clinton yell: 'g*ddamn b*stard,' he told Brower.

Hillary subsequently threw a 'heavy' object at him, in Brower's telling.

'The first lady's temper was notoriously short' during the early months of the scandal, according to the book.

When Butler James Hall was serving tea and coffee during a reception for a foreign leader and another employee forgot to clear the china, she snapped

'You must have been staring into space!' he recalled Mrs. Clinton saying. 'I had to take the prime minister’s wife’s cup. … She was finished and looking for some place to put it.'

AFFAIR: Former White House staff revealed their secrets about daily life inside the presidential mansion, including how they knew Bill Clinton and intern Monica Lewinsky (seen together) were sexually involved

HAPPY BIRTHDAY, MR. PRESIDENT: When Jackie Kennedy was away, a White House worker stumbled across her husband, John F. Kennedy (pictured, right, speaking to Marilyn Monroe in 1962), swimming naked in the pool with other women

Hall sais he wasn't asked back to perform his duties for a month.

Other presidents figure in Brower's book, including John F. Kennedy.

When then-first lady Jackie Kennedy was away at the couple's farm in Virginia, a White House worker apparently stumbled across her husband swimming naked in the mansion's pool.

And JFK was not alone: He was apparently joined by several female White House secretaries. Naked women were also sighted on the second floor of the building when Mrs. Kennedy was away.

Other revelations in the book include Jimmy Carter's sons' passion for bongs – their rooms were constantly filled with smoke – and their father's 'uncontrollable sobbing' after losing the election.