Mac and Devin stop in on the Greg Street Show to debut the track 'Smokin' On', featuring Juicy J, off of their upcoming album/soundtrack, Mac and Devin Go To Highschool, which is hitting shelves next Tuesday.  As for the movie, it's release date is sometime in February 2012. 
Video | December 10, 2011
Wiz Khalifa & Snoop Dogg On The Greg Street Show (Video)

Mac and Devin stop in on the Greg Street Show to debut the track 'Smokin' On', featuring Juicy J, off of their upcoming album/soundtrack, Mac and Devin Go To Highschool, which is hitting shelves next Tuesday.  As for the movie, it's release date is sometime in February 2012.