Biden mocks Trump’s weight and hampers his golf game in an unhinged presidential debate, Joe Biden got down on Donald Trump's weight when he upset his golf match-up during an especially off the wall part of the primary official discussion, RadarOnline.com has learned. At a certain point in the discussion, Biden, 81, and Trump, 78, were requested their perspectives on what age meant for their capacity to oversee — and the ex-president highlighted his golf match-up as a proportion of his reasonableness.