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VIDEO: Jennifer Lawrence & Jimmy Fallon are lying liars

Anna Sanclement is a freelance blogger/writer, who enjoys writing about celebrity gossip and parenting. You can read more of her work on her blog Mama Writes.

Play hilarious game of guessing weird things

Jennifer Lawrence and Jimmy Fallon were hilarious while playing a game of stumping each other about the contents of a mystery box.

Who knew guessing about what's in a box would be so darn funny? Well, at least it is when Jennifer Lawrence and Jimmy Fallon participate in a game of Box of Lies.

During Lawrence's visit to The Tonight Show Starring Jimmy Fallon, the actress and host sat down to stump each other about the contents of a mystery box. The trick is to tell the opponent what's in the box, but they could be lying about what's inside. If they guess right whether the other person is telling the truth or not they get a point.

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So, the first round had Lawrence tell Fallon that she had a Rubik's cube inside a mound of Jell-O, which was actually true. "Inside my box is a very curious thing..." Lawrence started. Then, after some funny face-making and hilarious staring, the X-Men: Days of Future Past star said, "It is a Rubik's cube inside Jell-O!"

"You lie!" Fallon said after he stared at his opponent with an overly serious face. "I tell truth!" Lawrence quipped.

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Next, Fallon won a point after Lawrence failed to guess he was lying about a Jesse doll from Full House inside a box full of Hershey's Kisses. It was all true except Fallon said it was one of the Backstreet Boys in the box.

In the end, Fallon got another point when he guessed Lawrence was lying about a "miniature horse on a bed of Flintstone vitamins," which was really an egg roll inside a bird's nest. After the actress smelled it and reiterated the contents, Fallon became suspicious.

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"You smelled it and you could smell that it's a Flintstone vitamin?" The funny late-night host sneered.

"Yes," Lawrence said unconvincingly as she tried to make an honest face that was not working to her advantage. "You lie!" Fallon guessed correctly, thus winning the game.

Check out the hilarious video below.

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