Michelle Obama is ready to tell us how she really feels.

The former first lady didn't hold back Saturday during a book tour stop in Brooklyn, New York, sharing some candid criticism of the "Lean In" philosophy as she spoke about the challenges women face while balancing work and home life.

"That whole, 'So you can have it all.' Nope, not at the same time," said Obama, who was promoting her best-selling memoir "Becoming," according to The Cut. "That's a lie. And it's not always enough to 'lean in' because that [expletive] doesn't work all the time."

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Glamour reported that the audience "went wild" as Obama apologized, telling her fans, "I thought we were at home, y'all. I was getting real comfortable up in here. All right, I'm back now. Sometimes that stuff doesn't work."

"Lean In," a popular 2013 book by Facebook COO Sheryl Sandberg, encouraged women to be more assertive at work.

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