Reese Witherspoon appeared on The Tonight Show Starring Jimmy Fallon on Tuesday, and after chatting about her movie Wild, which opens Friday, the two played a game of "Random Phrase Carols."

Jimmy's producers switched around the lyrics to a number of popular holiday tunes, and the new verses were written out on cue cards for him and Reese to read. While the Oscar winner initially seemed excited about the segment, she asked Fallon to go first, and when she was supposed to sing "Silent Night," she couldn't remember the tune, and she had to start again.

Of course, Reese redeemed herself when she teamed up with Jimmy for "Deck the Halls" ... check it out in the clip above!