Watch Jimmy Fallon Lie Straight to Kate Hudson's Face

Jimmy Fallon and Kate Hudson could barely keep straight faces when the actress appeared on The Tonight Show on Monday. The pair played the "Box of Lies" game, where they both had to say what they found in their mystery boxes while the other guessed whether they were telling the truth or not. Watch round one of the game above, then check out round two below to see why Kate struggled to keep it together during the game!