"Jimmy, Jimmy... *whispers* don't do the accent."
You see that look up there? That's the look of someone who is very disappointed in you. And Saoirse Ronan had a right to be disappointed in Jimmy Fallon thanks to his abysmal and borderline offensive attempt at an Irish accent, which he did to her face as they played a game of 'Catchphrase' with Timothée Chalamet and The Roots' Tarik Trotter.
She didn't let it bother her though as she blitzed through the game despite being "really nervous", only to have the whole thing stolen from her at the end which led to a level of fury that we're all familiar with.