The Irish actress joined online sensation Brittany Broski in her Royal Court podcast, discussing her extensive career and all things weird and wonderful.
Opening up about her missed cameo in the "Barbie" movie, Saoirse discussed her own obsession with dolls from a young age.
Delving into her old childhood habits, the "Blitz" star revealed her methods of playing as a child were far from normal.
"When you'd play with dolls growing up, you made up tragic backstories for your Polly Pockets," the podcast host declared, with Saoirse agreeing.
"They used to have affairs with one another," the Carlow-raised star divulged.
"So there was Polly and there was Woody from 'Toy Story.'
"I used to play with them, but then Woody in like season three, had an affair with Polly's best friend when they all went to college together," she added.
"It was definitely, like inspired by 'Saved by the Bell'. I would say.
"Season 3 got, like, wild, and then Polly got in a car crash and she lost her arm, which actually happened to my Polly Pocket in real life. My dog got her and ripped her arm off," she dramatically continued, leaving Broski in stitches.
Fans of the star were in bits at the bizarre story, with many taking to the comments to share their thoughts.
"I need all three seasons now," one wrote, while another joked "Season 3 got crazy. I need this show IRL asap."
"Not adjusting the plot to real-life injuries, what a fantastic director," another added.
"Okay where can I watch the whole series Saoirse??!!" a third laughed.
Greta Gerwig last year revealed that Saoirse Ronan and Timothée Chalamet were two cameos that she was unable to get for the "Barbie" movie. Saoirse worked with Greta on "Little Women" and "Lady Bird".
Despite a star-studded cast including dozens of cameos, Saoirse and Timothée Chalamet were approached to make an appearance, but weren't able to due to scheduling conflicts.
"Well, it was always going to have to be a sort of smaller thing because [Saoirse] was actually producing at the time, which I am so proud of her for," Greta told CinemaBlend. "And of course, it's brilliant. But it was going to be a specialty cameo.
"I was also going to do a specialty cameo with Timmy, and both of them couldn't do it and I was so annoyed. But I love them so much," she added.