http://www.newser.com/story/211519/idaho-ditches-mile-marker-420-so-stoners-wont-steal-it.html?utm_source=syn&utm_medium=goognews&utm_campaign=chan3_feed&google_editors_picks=true
When did 420 become the trademark number for stoners?
Quote from: The Ghostbuster on August 19, 2015, 03:00:06 PM
When did 420 become the trademark number for stoners?
The 1970s. See https://en.wikipedia.org/wiki/420_(cannabis_culture)