Watch Jennifer Aniston and Jimmy Fallon Swap Lips on 'Tonight Show'

Pair speak on each other's behalf and spar over Super Bowl in hilarious bit

Jimmy Fallon and Jennifer Aniston got in each other's heads on The Tonight Show Wednesday night, swapping mouths for a goofy new installment of the recurring "Lip Flip" segment.

The pair took turns gabbing as one another, with Fallon's lips first making Aniston talk like Sling Blade-era Billy Bob Thornton and the most amped, obnoxious Bonnaroo attendee. Aniston took a simpler route, turning Fallon into a sweet Southern belle: "I'm just pretty, pretty, pretty, pretty little thing, y'all," she said. "I think I'm gonna flip a house!" Her impression was cut short, however, by a near-fatal sneeze attack, which she played off as just a hairball.

Fallon and Aniston then jumped into a fierce debate about the most pressing issue of the day: Who will win the Super Bowl? Fallon had Aniston pulling wicked hard for the New England Patriots, while Aniston made Fallon the chillest Seattle Seahawks fan ("We got all the weed, man!"). Though the real game won't be settled until February 1st, Aniston and Fallon did provide an entertaining bout, shouting back and forth the best both cities had to offer: "Brady!" "Wilson!" "Chowdah!" "Coffee!" "Cheers!" "Frasier!" "Aerosmith!" "Pearl Jam!"

Though "Lip Flip" showed off Aniston's sharp comedic chops, the actress is currently starring in the far more dramatic Cake, in which she plays a Los Angeles divorcee with a painkiller habit. The role earned her a Golden Globe nomination for Best Actress in a Motion Picture Drama, with Rolling Stone film critic Peter Travers lauding her performance. "Aniston maintains our rooting interest," wrote Travers. "Yes, she's deglammed (that's not Rachel hair). Yes, she's damn near on her own up there. But she pulls it off triumphantly and cuts straight to the heart."