Joined by country legend Shania Twain, Swift, 21, hopped into a blue convertible to recreate the classic roadtrip/outlaw movie Thelma & Louise.
Glee's Overstreet, 22, played the part of J.D. (made famous by Brad Pitt in the 1991 film). "Who do you think you are, Brad Pitt or something?" Twain jokes, referring her hit song, "That Don't Impress Me Much."
Twain, 45, also made a sly dig at former best friend Marie-Anne Thiebaud, who had an affair with the singer's now ex-husband, Robert "Mutt" Lange. "That [gun] is just for hijackers, psycho killers, and former best friends," Twain tells Swift in the three-minute clip.