VIDEO : Joe Biden brutally tears into Donald Trump in scorching DNC speech

Joe Biden used his time at the Democratic National Convention to trash Donald Trump, calling his promises ?malarkey? and saying that he had ?no clue? about how to be president. ?His lack of empathy and compassion can be summed up in the phrase: ?You?re fired!'? Biden said. The audience roared with applause in agreement. Before Biden started talking about Trump, he said he ?knows Hillary Clinton? and he described her accomplishments.