Speakers at the DNC have mentioned the word "joy" more than two dozen times tonight.

The most recent reference came from Bill Clinton.

"Like Hakeem Jeffries, I too want an America that's more joyful, more inclusive, more future focused," he said.

"Just think what a burden that's been on us to get up day after day after day after day, buried in meaningless hot rhetoric, when there's so many opportunities out there, so many problems that need to be solved."

"President Obama once gave me the great honor of being the explainer-in-chief. Folks, I've thought about it and I don't know what to say," he said of Trump's references to Hannibal Lecter on the campaign trail.

"When she was young, she worked at McDonald's, and she greeted every person with that thousand-watt smile and said, 'How can I help you?' Now she's at the pinnacle of power and she's still asking, 'How can I help you?'" he said of Harris.

"I'll be so happy when she actually enters the White House as president, because she will break my record as the president who spent the most time at McDonald's," he said.

As president, Clinton often made stops at McDonald's -- something parodied on "SNL."

With his quip about Trump’s age, Clinton reminds us of a historical oddity: He, Trump, and George W. Bush were all born within a few weeks of each other in summer 1946. Trump was born on June 14, Bush on July 6, and Clinton on Aug. 19.

—538’s Nathaniel Rakich