IN VINO, VERITAS: Flashback: Hillary called Obama ‘incompetent and feckless’ in boozy rant.

Hillary Clinton called President Obama “incompetent and feckless” and charged that he had “no hand on the tiller half the time” during a boozy reunion with college pals, a new book claims.

The scathing attacks came as the wine was flowing at a May 2013 dinner at Le Jardin Du Roi, a cozy French bistro near the Clinton family home in Westchester, according to “Blood Feud,” by best-selling author Edward Klein.

The former first lady, months removed from being Obama’s secretary of state, unleashed the verbal assault between sips of vino, sources told the author.

“When her friends asked Hillary to tell them what she thought — really thought — about the president she had served for four draining years, she lit into Obama with a passion that surprised them all,” Klein wrote.

Clinton ranted, “The thing with Obama is that he can’t be bothered, and there is no hand on the tiller half the time. That’s the story of the Obama presidency. No hand on the f–king tiller,” according to the book, which was excerpted exclusively in Sunday’s Post.

“Obama has turned into a joke,” she went on, according to Klein.

“The IRS targeting the Tea Party, the Justice Department’s seizure of AP phone records and [Fox reporter] James Rosen’s e-mails — all these scandals. Obama’s allowed his hatred for his enemies to screw him the way Nixon did,” she raged, the book says, adding that she called the president “incompetent and feckless.”

Well, she and I are on the same page here.