While presidential battles are never fought with sweet talk, Barack Obama took his opponent bashing to a new level when he termed his Republican challenger Mitt Romney a "bullshitter".

The remarks that came in an interview to Rolling Stone magazine were essentially a light hearted aside, but led to many a raised eyebrow. Obama has repeatedly called Romney untrustworthy for his changing positions on major issues and even coined a whole new term for his condition -- Romnesia.

This time, however, the President took it a notch higher when responding to a suggestion on his popularity in kids, he said the young ones could see who was a 'bullshitter'.

"You know, kids have good instincts," Obama offered. "They look at the other guy and say, 'Well, that's a bullshitter, I can tell," the US President said. Obama said this when the editor interviewing the President told him that his six-year-old had asked him to convey to Obama that 'You can do it'.

"That's the only advice I need," he said. "I do very well, by the way, in that demographic. Ages six to 12? I'm a killer," he joked. Obama also said that by the next Halloween he hopes Romney will be an ex-presidential candidate.