the green guy Share definition Flag A slang term for marijuana, yet used in a more specific term when your bud looks it was dipped in crystals. "peep the green guy, this niggeh looks slammin'" "look at this green. this shit will get us CAKED" the green guy by thirdeyechakra July 13, 2006 0 0 Get merch Get the the green guy mug. Buy Now — $32.95 See more merch