Michelle Obama is over Sheryl Sandberg’s “lean in” theory.

The former first lady of the United States criticized the philosophy of feminism from the Facebook chief operating officer, detailed in Sandberg’s 2013 book Lean In: Women, Work and the Will to Lead, during an appearance at Barclays Center in Brooklyn over the weekend.

“Lean in”, according to Sandberg, encourages women to move ahead at work by “leaning in”, or asserting themselves in their ambitions.

RELATED: Michelle Obama Cancels Dates On Book Tour In Order To Attend Funeral Of George H.W. Bush

“That whole ‘So you can have it all.’ Nope, not at the same time,” Obama, who was promoting her own book Becoming, said. “That’s a lie. And it’s not always enough to lean in, because that s**t doesn’t work all the time.”

After realizing she swore, the author, 54, apologized: “I forgot where I was for a moment!”

RELATED: Michelle Obama On Her Time In The White House: ‘We Couldn’t Afford To Make A Mistake’

In 2017, Sandberg admitted that the “lean in” method isn’t as effective as she thought it would be: “We are stuck at less than six per cent of the Fortune 500 CEO jobs and their equivalent in almost every country in the world. There were 19 countries run by women when Lean In was published. Today there are 11.”

Following her appearance at Barclays, Obama rescheduled a few of the stops on her book tour to attend the funeral of George H.W. Bush.

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