The president of the United States has challenged former Vice President Joe Biden to a fist fight, and he thinks he’s going to win. Perhaps it was an inevitable response to Biden’s comments on Tuesday, when he said: “If [he and Trump] were in high school, I’d take him behind the gym and beat the hell out of him.” Just after 6 a.m. ET, Trump mocked the “mentally and physically weak” Biden and insisted that he would leave him in tears if the two men were to actually have a fight. Trump tweeted: “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. Don’t threaten people Joe!”