What does the term "420" indicate?  I have seen it several times but can find no references.  Please forgive my ignorance.

Weed friendly, marijuana, doobie, roach, grass, homegrown, .............. well that should give you a partial idea.

I'm now curious to know why you had to add a new thread rather then using the one posted below? Would have kept this information in one place - ohh well....

Unfortunately I had my pop-up blocker turned off and that link gave me a boat-load of pop ups.  Careful out there.