Justin Bieber appeared on last night's episode of The Late Late Show With James Corden, but this wasn't your typical interview!

Not only did the boys sing along to Bieber's breakout hit "Baby" and several other tunes while cruising around Los Angeles in a Range Rover, but they chatted about everything from underwear to girlfriends!

"When I picked you up I didn't recognize you for a minute," Corden joked with the Biebs. "Because you had a top on." Bieber briefly discussed his body transformation with the comedian, along with whether or not he makes love to his own tunes. Corden also picked apart some of Bieber's song lyrics, but clearly the 21-year-old pop star didn't mind. But when asked where he sees himself in 10 years, we found Bieber's reply quite surprising!

Click the video above to watch -- you won't be disappointed!