Tina Fey Impersonates Sofia Vergara, Jack Nicholson and Others With Jimmy Fallon

Tina Fey JImmy Fallon H 2015
Douglas Gorenstein/NBC

Tina Fey JImmy Fallon H 2015

"I stink at impressions, and you're very good at impressions," Fey told Fallon.

Tina Fey and Jimmy Fallon were full of laughs on Monday when Fey stopped by The Tonight Show to promote her film Sisters.

"One of the many things I love about you is your impression of Robert De Niro," Fallon told his former Saturday Night Live co-star. "It's the worst impression I've ever seen."

After Fey showed off her De Niro impersonation, Fallon introduced the game they would be playing, "First Impressions."

"It’s tricky because I stink at impressions, and you’re very good at impressions,” said Fey. "Yeah, this is not fun at all," replied Fallon before they took turns guessing the other's impersonations.

Watch the video below to see Fey do a Jack Nicholson impression that could double for Matthew McConaughey while Fallon tries out his best Barbara Walters.