The word 4/20 comes from a couple of things firstly, a young man (greek) by the names kosta h(btw i hear his hot) or so not sure about his full name invented it by smoking tons of weed euuurddaaay at the same time he noticed a pattern in this. Everyday it would be at 4:20 after school... so from there he new he had to start calling it that. Secondly 4/20 is also a cops way of reporting that ppl are smoking weeed. thirdly, an event in amsterdam (weed capital) at the 4th month of the 20th day of the 4th hour of the 20th minute evryone in amsterdam would smoke the mary-jane.
"hey common lets go 4/20 (ppl dont noe wat it is so lets call it that and wont get caught XD)"
" we have a 4/20 in progress at jane and finch"
by Bikemaster April 22, 2009
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1. Hitlers Birthday not Weed day.
Mary - ima be 4/20 blazin

Greg - You are gonna be smoking Hitlers B-Day?
by mrcannoli1997 June 24, 2015
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First, there is no police code "420". There are no police codes referring to any particular drug, marijuana included. It's time to bury this myth.

4:20 was the designated time for a small group of smokers at San Rafael High School in California to meet at a specific location and light up. The number originates some time around 1971. It has since been adopted by smokers the world over as the "universal time to get high."
by This is my name. June 6, 2005
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national weed smoking day. light em up at 4:20 pm or am.
man, i cant wait for 4-20 to come. its almost as good as christmas.
by ... April 24, 2005
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The "official time" to smoke it up...
The original story:
A small group of kids in high school used to meet up everyday after school at 4:20 and smoke on the hill. One day on April 20th, at 4:20 they were all like "woa...it's 4:20, and 4/20- we should make this celebration official" the celebration spread and now 4/20 is an amazing day to get blazed thanks to a group of high school kids from norcal from the 70's
dude...it's 4/20...let's get blazed
by marinite June 17, 2005
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One of the many names for weed. Its mainly in reference to time. But theres also April 20th.
Its 4:20, gota hit that bowl.
I cant wait til 4/20,(april 20th) Im gona be stoned off my ass.
by Sonja February 19, 2003
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