Barack Obama turned Donald Trump into a punchline during his final performance as president on Jimmy Kimmel's late night chat show, saying he laughed at the Republican nominee "most of the time".

The president confirmed he had watched the lewd video of Mr Trump being sexually aggressive towards women and said he knew immediately it would change the presidential election.

Mr Obama said if an ordinary office worker had been recorded making similar comments, “it’d be a problem for him... And he’s not running for president".

Kimmel then asked Mr Obama whether he ever laughed when watching Mr Trump on television. "Most of the time," he answered.