WikiAnswers - Where did the saying '420' come from
In 1971 a group of San Rafael High School students used to gather around 4:20pm
to smoke pot, so "420" became the slang for signifying the time to light up. ...
wiki.answers.com/Q/Where_did_the_saying_'420'_come_from

Reefer Madness 1936: Movie and film review from Answers.com
[10] The original release date was April 20, 2004 (4/20/2004) , a reference to
the drug slang term "420." However, a different number "240" is flashed ...
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WikiAnswers - What does 420 friendly mean
Idioms and Slang question: What does 420 friendly mean? 420 refers to marihuana
... Whats do 420 frienly? Can a Aies be friendly? 420 sex what does it mean? ...
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'420' Slang for Marijuana Going Mainstream
The National Organization for the Reform of Marijuana Laws (NORML) may help bring
the underground term "420," the international code word for smoking ...
www.jointogether.org/news/headlines/inthenews/ 2001/420-slang-for-marijuana-going.html

WikiAnswers - Idioms and Slang Q&A - WikiAnswers
Additional Idioms and Slang Questions [Page 7]. What does 420 friendly mean.
[Popularity 8] See question. What does the phrase 'it is as handing as it is ...
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ballpark: Definition and Much More from Answers.com
Slang. The approximately proper range, as of possibilities or ... but there is
a corner in the fence just right of center that juts out to 420 feet. ...
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WikiAnswers - Discussion of 'What does 420 friendly mean?'
You have arrived at an empty discussion page for "What does 420 friendly mean?
... Idioms and Slang > Question > Discussion of "What does 420 friendly mean? ...
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404: Information and Much More from Answers.com
Hacker Slang: 404. [from the HTTP error “file not found on server”] Extended to
... Huan Xuan, was a Jin Dynasty (265-420) warlord who briefly took over the ...
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WikiAnswers - Discussion of 'Where did the saying '420' come from?'
Idioms and Slang · Word and Phrase Origins · Urban Legends ... Speech > Idioms
and Slang > Question > Discussion of "Where did the saying '420' come from? ...
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snopes.com: 420
'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. ...
www.snopes.com/language/stories/420.asp