Peter Kramer / Invision/AP 1 / 2
Peter Kramer / Invision/AP 1 / 2

By Dana Flax

Fairly certain you'll never see former First Lady Laura Bush with dreadlocks? Think again.

In an interview scheduled to air on Tuesday's "The Oprah Show," Jenna Bush reveals that her mother is "a secret Rastafarian" who "[plays] Bob Marley" around the house.

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The Bush girls, who were on the show to promote Laura's new memoir "Spoken From The Heart," revealed what a typical night in their Crawford, Texas ranch is like. Jenna said the family listens to "old country [songs]," while enjoying family activities and lots of food.

"We don't really cook dinner if I'm gonna be honest," she said. "Somebody cooks dinner and we sit around and we talk and we laugh and we do puzzles and we get in bed by 9:00."

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Teased a sharp-tongued Laura: "They didn't used to."