President Barack Obama says that it's even obvious to 6-year-old children that Republican presidential nominee Mitt Romney is a "bullshitter."

In an upcoming cover piece for Rolling Stone, Douglas Brinkley recalls his Oct. 11 meeting with Obama in the Oval Office.

"As we left the Oval Office, executive editor Eric Bates told Obama that he had asked his six-year-old if there was anything she wanted him to say to the president," Brinkley writes, according Politico's Mike Allen. "[S]he said, ‘Tell him: You can do it.’"

"You know, kids have good instincts," the president reportedly said with a grin. "They look at the other guy and say, 'Well, that’s a bullshitter, I can tell.'"

During the interview, Obama also pointed to his accomplishments, like passing health care reform and increasing access to student loans.

"It’s important for people to understand how much we’ve gotten done, because sometimes folks obsess with gridlock and the ugliness of the process here in Washington," he explained. "We passed health care – something that presidents have tried to do for 100 years, and we will implement it. We passed the toughest Wall Street reform since the 1930s, and we will implement it and continue to strengthen it. We have put in place a Consumer Finance Protection Agency."

"We have expanded access to college through the Pell Grant program and by keeping student loans low. The list of things that we’ve accomplished, even once the Republicans took over [the House], is significant. … We’re going to have a full agenda in the second four years, but people shouldn’t underestimate how much we can get done."

[Photo: Flickr/The White House]