Right on cue, Snoop Dogg comes out and joins the band for their collab "Let It Run" ... rapping while puffing on a joint!!!
Snoop Dogg Performs 'Let It Run' With Zac Brown Band While Smoking a Blunt
Snoop Dogg is now a certified member of the country music bandwagon ... the megastar rapper recently joined Zac Brown Band for a..
TMZ