LOS ANGELES, California (X17online) - Britney Spears says her kids Sean, 3, and Jayden, 2, are picking up some bad habits from their father, Kevin Federline.

In an interview with Rolling Stone magazine, Spears says the kids are starting to use words like "stupid" and that her 3-year-old uses the "F-word."

"He doesn't get it from us," Spears says. "He must get it from his daddy. I say it, but not around my kids."

According to the article's author, interviewing Spears was a "rigorously micromanaged process."

"We were never left alone together, and my questions had to be submitted ahead of time for approval," reporter Jenny Eliscu writes.

But the interview is not without some candid moments from the pop singer, particularly about the conservatorship which puts her father Jamie in charge of her personal and business affairs.

"I feel like an old person now," the 26-year-old Spears says. "I go to bed at, like, 9:30 every night, and I don't go out or anything."