Awkward! Emma Stone once tried to teach Woody Allen how to use Twitter and accidentally referenced one of the filmmaker's own jokes along the way. 

The Aloha actress, 26, detailed the funny moment in an interview with Conan O'Brien on Tuesday, July 14. She appeared on Conan to promote her new movie Irrational Man, and was asked by O'Brien if she had any funny stories about Allen, the film's director.

"He asked me what Twitter was, basically to explain Twitter to him," Stone began. "I was kind of telling him, you know, 'It's 140 characters and you kind of write these sentences, and I don't understand the point unless you're like a musician and you're sort of advertising a gig or you're a comedian and you're doing one-liners or something.'"

The Easy A star went on to explain that Allen, 79, asked her for an example of a good Twitter account, which brought the actress to the feed of famed author Joyce Carol Oates.

"I said, 'Do you know who Joyce Carol Oates is?'" Stone recalled. "He said, 'Yeah, I know her personally.' I was like, 'Well, of course, 'cause you're Woody Allen... Here's a great one. She wrote, 'Tragedy plus time equals comedy.' That's great!'"

"He goes, 'That's my line,'" the star continued. "I was like, 'Wait, what?' He goes, 'In Crimes and Misdemeanors, Alan Alda, we did it about 40 times!'"

See what Allen had to say about the use of his joke in the video above! Can't get enough of Us? Sign up now for the Us Weekly newsletter packed with the latest celeb news, hot pics, and more!