 The caption on X reads, my dad had an expression. He said, champ, it's not how many times you get knocked down, it's how quickly you get up. Yes, Joe Biden's dad was the one who invented that, apparently. And then he says, I'm told there's even a song about it. And they actually put out this video to prove how relevant and with it Joe Biden is. Roll it. I know what the millions of Americans know. When you get knocked down, you get back up.