President Barack Obama, first lady Michelle Obama (L) and daughters Malia Obama (R) and Sasha Obama (2L) walk from the White House across Lafayette Park to St. John's Church for Sunday services Dec. 11, 2011 in Washington, DC

*In their only print interview of the holiday season, President Obama and the First Lady open up to People magazine about family life at the White House.

Among the revelations, they don’t allow daughters Sasha and Malia on Facebook. Not that it’s been a hard decision to enforce, says the President.

The girls’ theory is, “Why would we want to have a whole bunch of people who we don’t know knowing our business? That doesn’t make much sense.” But when the First Lady points out that Malia is only 13 and Sasha 10 right now, the President laughs and adds, “We’ll see how they feel in four years.”

The Obamas, who let the family dog Bo sit in on the Dec. 5 interview (only after removing his distracting jingle-bell collar), also revealed that must-see TV in the White House divides along gender lines.

“For the girls and me, ‘Modern Family,’ that’s our favorite show,” the President says, adding that he’s “a little darker” in his TV habits, listing “Boardwalk Empire” and “Homeland” as his must-sees, other than sports.

“Yes,” said the First Lady with a laugh, “we don’t watch TV with him.”

And lest anyone think the private residence of the most powerful man in the world comes with all the latest gadgets and gizmos, President Obama says the technologically antiquated second-floor family quarters only recently saw a DVR installed. “We’re a little bit behind,” he says.

The full Obama interview is available in the special year-end double issue, on newsstands Friday.