Former first lady Michelle Obama shocked an audience and herself when she let a curse word slip during a rant about having it all.

Obama made a comment on Saturday during an event for her book tour at Barclays Center in Brooklyn, New York. She was talking about the concept of “leaning in,” a method popularized by Facebook’s chief financial officer Sheryl Sandberg through which women are supposedly able to “have it all,” according to Vanity Fair.

“Marriage still ain’t equal, y’all,” Obama said to the packed room. “It ain’t equal. I tell women that whole, ‘You can have it all’ — mmm, nope, not at the same time, that’s a lie. It’s not always enough to lean in because that s**t doesn’t work.”

The crowd applauded when the word dropped while Obama laughed it off.

“I thought we were at home, y’all. I was gettin’ real comfortable up in here. Alright, I’m back now. Sometimes that stuff doesn’t work,” she said.

While the Obamas have a seemingly perfect marriage, the forever FLOTUS admitted it takes hard work to keep it going. She described some of the challenges she and her husband have weathered in her memoir Becoming.

“People are like, 'Oh, why’d she talk about marriage counseling?' I’m like, ‘Duh.’ Marriage is hard, you know. It is hard … I love my husband, and we have a great marriage, and we’ve had a great marriage, but marriage is hard work,” Obama told the audience. “Marriage is a lot of work, and it should be. It’s two independent individuals who are trying to come together to build a life forever.”

The 54-year-old has been candid about her experiences since she began promoting her new book. On Friday, Obama described the immense pressure her family felt during their time in the White House, according to The Daily Beast. She even revealed she cried on the flight home after her husband left office.

“When you’re the first of anything, the bar feels higher. You don’t have room to make mistakes,” she said. “It was just the release of eight years of feeling like we had to do everything perfectly, that there wasn’t a margin of error, that we couldn’t make mistakes, that we couldn’t slip, that our tone had to be perfect.”

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