Quote:
	
	
		| 
					Originally Posted by breakingnews
					
				 Significance of 4-20 is ... 420 is a police call sign used in some parts of the country (dunno if it still is) to signal "marijuana use in progress." | 
	
 Snopes says that the police-code story is a common misconception.  Interestingly, this article was just posted a couple days ago.  According to them:
	Quote:
	
	
		| '420' began its sub-rosa linguistic career in 1971 as a bit of slang casually used by a group of high school kids at San Rafael High School in California. '420' (always pronounced "four-twenty," never "four hundred and twenty") came Is it 4:20 already? to be an accepted part of the argot within that group of about a dozen pot smokers, beginning as a reminder of the time they planned to meet to light up, 4:20 p.m. | 
	
 But they could be wrong.  Like my shoes, Snopes is not infallible.