United Kingdom, May 16 -- US President Donald Trump has blasted Bruce Springsteen as a "pushy, obnoxious JERK" and "dumb as a rock".

The 78-year-old former reality TV star was furious after Springsteen, 75, hit out at the "corruption" and "incompetence" of the Trump administration during a recent concert in Manchester, England, and Trump responded with a lengthy rant via the social media platform Truth Social.

Referring to Springsteen campaigning for former US President Joe Biden, he wrote: "Sleepy Joe didn't have a clue as to what he was doing, but Springsteen is 'dumb as a rock,' and couldn't see what was going on, or could he (which is even worse!)? This dried out 'prune' of a rocker (his skin is all atrophied!) ought to KEEP HIS MOU...