Gary Barlow is on the receiving end of a foul-mouthed blast by a retired rock 'n' roller when he criticises his singing on tonight's show.
The Take That man tells retired kitchen porter Nick Buss he is not impressed with his cover of a Buddy Holly song.
But the 70-year-old from Chiswick, west London, does not take kindly to his remarks telling him: "You're entitled to your f****** opinion."
He does not spare the rest of the X Factor panel either, telling Dermot O'Leary the panel "don't know what they are talking about" and blaming "that f****** Tulisa".