Joe Biden was mocked this weekend after launching a campaign slogan - "no malarkey" - that did little to dispel fears the front-runner in the Democrat presidential nomination is behind the times. The phrase, emblazoned on the bus he is using to travel around the key state of Iowa, dates back to the 1920s. Mr Biden, who would be the oldest first-term president to be sworn in at 78, said the term was intended to highlight his truthfulness when compared to Donald Trump. "What we're referring here [is] my Irish ancestry, when my grandfather would really think something is full of you know what, he'd say, 'that's a lot of malarkey,'" he explained to supporters on Sunday. "So we're on a No Malarkey tour, meaning we're telling the truth." Mr Biden often harks back to his role as vice-president to Barack Obama and he notably used the phrase to dismiss Paul Ryan in a 2012 Vice Presidential debate, emphasising his reputation as straight-...