From the fable "stone soup".

When someone wants to roll a joint but doesn't possess any of the necessary ingredients (rolling papers, tobacco, cannabis) themselves and attempts to procure them from others, esp. each from a different person, with the promise of a share of the resulting joint.

A common occurrence at music festivals.
Mary said her stone joint would be even nicer if I put some of my hash in it.
by esquilax January 16, 2008
Get the stone joint mug.
Two joints stoned is when you quite stoned but theres definitely room for more weed
Man 1: you look stoned
Man 2: ye man but im only two joints stoned
Man1 : well skin the fuck up man

I dont leave the house until im two joints stoned.
by frogpubes October 4, 2013
Get the two joints stoned mug.