Rocker Jack White has unleashed a blistering attack on Donald Trump and his administration after being branded a 'washed-up loser' by a top White House aide.

The feud began earlier this week when the former White Stripes front man mocked Trump's newly redecorated Oval Office, describing it as 'a vulgar, gold-leafed and gaudy professional wrestler's dressing room.'

He went on to say that the White House lawn might soon host a UFC fight, saying the spectacle would bring the country closer to resembling the satirical film Idiocracy.

White House Communications Director Steven Cheung swiftly fired back, dismissing the Grammy-winning musician as 'a washed-up, has-been loser posting drivel on social media' who 'disrespects the splendor and significance of the Oval Office inside of The People's House.'

White then responded on Instagram with a lengthy statement that escalated the war of the words. He called Trump a 'low life fascist,' a 'bankrupter of casinos,' and a 'failed seller of trump steaks, trump vodka, trump water, etc.'