Get off work at 4pm... and be lit up by 4:20 pm...
Magazine called 420 Times...just FYI..

Link-  you are the man!

Or was that a line from a 70's show?

I actually grew up around those guys!  But did not start using the term until the 90s!  Funny!  I got it from the youth culture and hip-hop/skate culture both of which feature a lot of smokers.

But most of terms I use are Rasta- the milieu I chose in HS.

Bye now gotta test the lamb's bread...