A point where a person or persons within a group get so stoned that they reach a silent standstill. (AND/OR) A collective ceasing of thought and or focus amoungst a group of stoners.
(Similar to a runner hitting a "brick wall" where everything goes silent and they completely loose focus and stop in a standstill state)
STONERS: (Random Talking)
1 minute later...
2 minutes later...
STONER 1: Dude what were we talking about?
STONER 2: I don't know man, I think we hit a stoner-wall.