Michelle Obama remembers her final minutes as the country's first Black FLOTUS like it was yesterday. Now, almost two years since leaving the post, she is revealing the hilarious last words she uttered after Donald Trump's presidential inauguration in 2017.

Obama, who's on a highly successful book tour to promote her new memoir Becoming, was a guest on The Tonight Show Starring Jimmy Fallon Tuesday night.

Fallon held up an image of the former lawyer with her husband and former President Barack Obama smiling and waving before boarding Special Air Mission 28000 — what would have previously been Air Force One — following Trump's inauguration.

The late-night host asked Obama to share what was going through her head following the end of a hectic day.

"Bye Felicia!" Our forever FLOTUS emphatically said.

The audience and Fallon erupted in laughter.

The Chicago-bred Ivy League graduate also touched on the topic of marriage counseling, revealing her hope that her admission of her and Barack's decision to seek help in their relationship, will inspire other couples to follow suit.

"There are a lot of young people who look at me and Barack, and you and your wife and people they see, and they think, 'Oh, I want those #RelationshipGoals,'" she said to Fallon.

"But, I want young people to know that marriage is work. Even the best marriages require work," she added.

Since its release on November 13, Becoming has sold 3 million copies in all formats in the United States and Canada, according to Crown Publishing.

Due to popular demand, Obama recently announced she is extending her book tour into the new year. The second leg of the Becoming tour will hit 11 cities in the United States, including four stops in Canada and six in Europe, kicking off with a February 8 event in Tacoma, Washington, at the Tacoma Dome. A complete list of cities and ticket prices are available on the official Becoming website.

Watch more of Obama and Fallon's conversation below.

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