What is 420 Friendly?
This is a way to express the acceptance of smoking pot or accepting somone who does so, without overtly mentioning pot or marijuana.
You may find the phrase 420-friendly often in personal ads, especially on Craig's List.
It refers to the term
See the definition of
"420 originated at San Rafael High School, in 1971, among a group of about a dozen pot-smoking wiseacres who called themselves the Waldos"
"Single white male, 420-friendly..."
"Hey, is this party 420 friendly?"