Later on, Lively faced off against Jimmy Fallon in a game called Know It All. The show's announcer, Steve Higgins, served as their host. "Know It All is a game of knowledge and deception. Here's how it works: Each round, you will choose a category—things like fruits, countries or TV shows. Then, take some turns naming something in that category. Your clock counts down, and when it's your turn, and whoever's clock runs out first, loses that round. If you can't think of anything in that category, you can bluff and make something up," he told them. "If your opponent hits this challenge button, though, and successfully calls your bluff, they win that round. You can also challenge the other player if they repeat something you say." Higgins then gave Lively and Fallon six categories to choose from: British People, Spanish Words, Disney Movies, Popular Baby Names, Four Letter Words and Harry Potter Characters.
To see which celebrity won, watch the video above.
(E! and NBC are both members of the NBCUniversal family.)
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