Snip

A former Secret Service officer who helped protect Hillary Clinton while she was in the White House charges in a new tell-all book that the former first lady had a 'volcanic' temper and occasionally got violent with her husband – and that a loud 1995 fight left the president with a black eye.

In the book, 'Crisis of Character,' former agency officer Gary Bryne, details arriving at work after a 1995 shouting-match that left a light blue vase 'smashed to bits' and Bill sporting a 'real, live, put-a-steak-on-it black eye.'

Things got so bad that Secret Service agents had discussions about the possibility they might have to protect the president from his wife's physical attacks, the New York Post reported in advance excerpts of the book.

'Everyone on post that night' couldn't help but hear the fracas, according to early chapters posted online. It describes a big argument that 'ended with a crash.'

Byrne writes that he saw the president at about 9 am after the fight.

When Byrne asked White House scheduler Nancy Hernreich about the black mark on the president's face, she replied, "Oh, uh, he's allergic to coffee,' Bryne writes she responded.

'I'm also alergic to the back of someone's hand,' Byrne says he responded.

The book casts Hillary, who is expected to lock up the Democratic nomination on Tuesday, as' too 'erratic, uncontrollable and occasionally violent' to lead the nation, according to promotional excerpts for the book.

“Hillary Clinton is now poised to become the Democratic nominee for president of the United States, but she simply lacks the integrity and temperament to serve in the office,” writes Bryne.

“From the bottom of my soul I know this to be true. And with Hillary’s latest rise, I realize that her own leadership style — volcanic, impulsive, enabled by sycophants, and disdainful of the rules set for everyone else — hasn’t changed a bit,” he adds.

Byrne even claims he once threw out a White House towel stained with a woman's lipstick and the president's 'bodily fluids'

The book gets released June 28th, though it jumped from obscurity to No. 1 on Amazon's list of bestsellers after the Drudge Report linked to it.