Kristin Cavallari—mother to Camden Jack, Jaxon Wyatt, and a forthcoming baby to be named after a dog—recently spoke to People.com’s Moms&Babies section about the challenges of being a mom and a Kristin Cavallari.

She revealed of Camden, age three: “Camden said the F-word once.”

Uh oh. Did he say it for a reason or no reason?

“He said it like, ‘Mommy, why did you say fuck?’ so he didn’t just say it for no reason,” Kristin offered. “It really makes you catch yourself and make you be aware of what you’re saying all the time.”

Kristin’s book about “mommy and wife stuff” and whatever else hits shelves in 247 days.

This has been 500 Days of Kristin.

[Photo via Getty]