Jimmy Fallon may have helped Sia cover the song "Iko, Iko" on "The Tonight Show" Wednesday night, but he had no idea what the words actually meant. Later in the show, the host sat down with actress Natalie Portman, who informed him of the meaning behind "Iko, Iko," leading Fallon to dub her a "human Wikipedia."

"Not at all," the Harvard-educated Portman told Fallon. "I'm like a person who uses Wikipedia like all other people."

"I didn't research it, I was just looking for the lyrics," the actress continued. "God, you go to Harvard, everyone gives you a hard time for the rest of your life."

Portman then recounted how she first met Fallon and his houseband The Roots. When Portman was at Harvard, she worked for the University booking concerts, and one of her top priorities was getting The Roots to play a gig and booking Questlove to moderate a panel. Fallon's attempts at performing stand-up at the Ivy League school were not as successful.

"I don't remember getting the call back," Fallon said.

Check out the clip below to watch Portman explain the meaning behind "Iko, Iko."