Doobie rappers Snoop Dogg and Wiz Khalifa are still on their promotional run in support of their their upcoming 'Mac + Devin Go to High School' soundtrack, which hits stores Dec. 6. Class was in session as the rap tandem -- wearing furry winter hats -- spit a freestyle for Washington, D.C.'s radio station 93.9 WKYSDC that consisted of their buddy movie and smoking the green herb.

Over Meek Mill's sinister beat for 'House Party,' Snoop kicked off the freestyle with some suave wordplay. "I got 'em screamin' jumpin' / Now they are in the mood / 'Cause its Big Snoop / And I'm in high school," he rapped.

Wiz followed with his rhyme, giving big-ups to his good buddy. "It's that grown stuff / Not that little kid / We're coming through / And it's your n---a the Wiz / And Big Snoop / What chu tryin' do / We're smokin' good / And we're in the coupe," Wiz rhymed.

Meanwhile, in an interview with Philly's Wired 96.5, Snoop and Wiz talked about their days in high school. "I was a cool positive dude, real funny," recalls Wiz of his days as a high-schooler.

Snoop and Wiz's 'High School' tour will hit Atlanta on Saturday (Dec. 10) followed by San Francisco, Calif. (Dec. 12) and Los Angeles (Dec. 13).

‘Mac and Devin Go to High School’ is expected to roll up in theaters in February 2012.

Watch Snoop Dogg and Wiz Khalifa Freestyle

Watch Snoop Dogg and Wiz Khalifa's Interview with Wired 96.5