The Whiskey Tango Foxtrot star tried her hand at Jimmy Fallon's Whisper Challenge during an appearance on The Tonight Show Tuesday.
While seasoned pro Fallon nailed his first word right out of the gate, the 25-year-old had a steep learning curve.
With her ears covered by headphones, Robbie struggled to identify "Bondi Beach," guessing everything from "a buzzing beach," to "but a beach" and even "bella."
"This is so hard!" the exasperated star exclaimed.
Fallon, again, landed the correct answer easily on his second turn while Robbie wasn't so lucky.
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"Labradoodle" became "llama show," and "llama shoe" before Robbie devolved into a fit of giggles.
Finally, Robbie found the correct answer, inspiring a hilarious victory dance from the host.
Whiskey Tango Foxtrot hits theaters on Friday.