This is of course based upon the Rainbow Scale used by many Hippy's, Bush Folk and Mountain Dwellers in their reference to, well, mainly rainbows, but also other stuff too:
1. Sprinkler Rainbow
2. 1/2 Rainbow in the sky
3. Full Rainbow all the way
4. Double Rainbow 1/2 the way
5. Double Rainbow all the way
6. Triple Rainbow
A Triple Rainbow is like the voice of god, the only way to witness one and live is in a game of Pictionary with Metatron.
Hungrybear9562: OMG! It's a Double Rainbow, All the way, across the sky!!!! DOUBLE RAINBOW ALL THE WAY!!! What does this mean?
John: Did you just hear that Hang Drum solo?
Peter: Yeah dude, it was Double Rainbow all the way.
Based on the internet video where a guy makes it abundantly obvious that he is extremely stoned through his astonishment of viewing a "double rainbow all the way".
Search youtube: Yosemitebear Mountain Giant Double Rainbow 1-8-10
Dude2: "Dude, double rainbow all the way"