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1.
When someone is smoking "purple" marijuana, they're said to be blowing out "purple smoke" aka "purple clouds".

Purple marijuana is considered to be of a very high quality.
Drake: "Blowing Purple Clouds Nigga I'm so sky high"
by dgad87 March 10, 2012
5 2
 
2.
The smoke produced when you smoke any strain of marijuana that is of a purple color.
Steve: hey Julio, I hot some grand daddy purple. wanna smoke it with me?
Julio: hells yeah man, Imma blow some purple clouds with this shit.
by Fascinated Spirit May 09, 2013
0 0