Donald Trump wasted no time in attacking Joe Biden amid rumours the former vice-president will run for President in 2020.

Taking to Twitter, Trump said that Biden would “go down fast and hard, crying all the way” if the two were to ever take part in a fight.

Trump’s tweet was in response to Biden’s previous comments about Trump’s comments about women.

Speaking at a University of Miami rally to combat sexual assault, Biden said: “A guy who ended up becoming our national leader said, ‘I can grab a woman anywhere and she likes it,’ ”

“If we were in high school, I’d take him behind the gym and beat the hell out of him,” he added.

“I’ve been in a lot of locker rooms my whole life. I’m a pretty damn good athlete. Any guy that talked that way was usually the fattest, ugliest SOB in the room,” he said, referring to the leaked tape that surfaced during the 2016 election.

Trump responded with a fierce tweet: “Crazy Joe Biden is trying to act like a tough guy. Actually, he is weak, both mentally and physically, and yet he threatens me, for the second time, with physical assault. He doesn’t know me, but he would go down fast and hard, crying all the way.”

Rumours of the former Vice President running for the White House in 2020 have been rife, with Biden saying he believed he could have beat Trump in the 2016 election.

While he considered running in the last US election, he decided against it after the death of his son.

Biden is still very much active in politics and on Thursday, announced a three-point “Plan to Put Work – and Workers – First”.