If you were thinking that Donald Trump would be too busy with his various presidential roles - including meeting the leader of North Korea in recent days - to respond to a movie star's jibe at him, you've obviously not been paying attention.

Robert De Niro earned a standing ovation at the Tony Awards on Sunday night for his 'F**k Trump!' speech, but it clearly rankled with the POTUS, who took to Twitter to admonish the 'Raging Bull' actor.

He described DeNiro as a 'very Low IQ individual' and suggested that he was 'punch-drunk' at the Tonys, before declaring 'Wake up, Punchy!' in another tweet - even though it was clearly his ego which had been bruised.

Our money's on Punchy in this one.

See the rather amusing reaction below: