(Photo by Christopher Polk/Getty Images for PCA)LOS ANGELES, CA - JANUARY 11: Actress Miley Cyrus (L) and Liam Hemsworth arrive at the 2012 People's Choice Awards at Nokia Theatre L. Live on January 11, 2012 in Los Angeles, California.

(Photo by Michael Buckner/Getty Images for PCA)LOS ANGELES, CA - JANUARY 11: Singer/actress Miley Cyrus and actor Liam Hemsworth arrive at the 2012 People's Choice Awards at Nokia Theatre L. Live on January 11, 2012 in Los Angeles, California.

Our favorite moment of the video, though, comes at the very end when Hemsworth, who's driving during the clip, suddenly screams. Seriously stop."Clearly, Liam Hemsworth is quite the prankster.SEE ALSO: Zac Efron talks sobriety, losing his mind from social media and why he can't date The video shows Miley focusing the camera on her beagle, Barbie, as she and Hemsworth attempt to harmonize to the soulful sound of Justin Bieber.Obviously, Cyrus sounds amazing, casually slaying her falsetto throughout.(Photo by Justin Lloyd/Newspix/Getty Images)HOLLYWOOD - MARCH 25: Actress Miley Cyrus and actor Liam Hemsworth arrive at the Los Angeles Premiere 'The Last Song' at Arc Light Cinemas on March 25, 2010 in Hollywood, California.(Photo by Jon Kopaloff/Film Magic) WEST HOLLYWOOD, CA - MARCH 07: *EXCLUSIVE ACCESS, PREMIUM RATES APPLY* Liam Hemsworth and Miley Cyrus attend the 18th Annual Elton John AIDS Foundation Academy Award Party at Pacific Design Center on March 7, 2010 in West Hollywood, California.