April 20th has become an unofficial holiday for pot-smokers, and 420 has become global code for marijuana, but the origins of the term were long shrouded in mystery. Ryan Grim, Washington Bureau Chief for the Huffington Post
, tracked down Steve Capper and Dave Reddix, a.k.a. Waldo Steve and Waldo Dave, who make the case that their high school pals coined the phrase in 1971. Brent chats with all three.