"As soon as you look at the card, you have five seconds to describe the plot of the movie. You can't use any words in the title, no actor's names," Fallon explained to the Brooklyn Nine-Nine star.
Samberg flipped the first card, which read: "Uh, this was a relationship via the Internet… in the '90s." The correct answer to the question was You've Got Mail, which Fallon answered incorrectly with his response, "Basic Instinct?"
The late-night host then picked up a card and sputtered, "Black guy, white guy, aliens." Samberg immediately quipped, "Independence Day! …Men In Black?"
Samberg also told Fallon during his appearance on The Tonight Show that his pal Mark Zuckerberg got him to join Facebook. The Fox star added that the company's founder is his one and only friend on the social media platform, and he asked Zuckerberg how to make random friend requests stop.
Samberg recalled one conversation where he told Zuckerberg: "I hate to do this to you… head of Facebook, but I think I need some tech support here."
Watch more from Samberg's funny appearance above!
Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!