Nickel Pot Rack What Was The Origin Of The Term "lid" , Regarding Amounts Of Marijuana?

What was the origin of the term "lid" , regarding amounts of marijuana? - nickel pot rack

I do not know whether the term is also used, but even in my youth (1970) boat was in the action have bought "dime bag", "Nickel Bag" and a "ceiling" (greater than TN.). Where the hell has this term come from? This seems so stupid and useless for me! Does anyone know? One of these stupid questions all of us shoot in the bar ...