Sir Keir Starmer called Boris Johnson a 'bulls***er' when asked for a nickname for the Prime Minister.
The Labour leader also said it is "nonsense" to claim his party has not been leading on the cost-of-living crisis. He was interviewed by Iain Dale and Jacqui Smith at an Edinburgh Fringe event on Friday.
Mr Dale said there had been criticism of Labour's stance but said "all politicians have to take holidays".
