Also, it means it's been harvested just before full maturity in some cases,
for example.
Stoned effect = much heavier in comparison to cerebral "high effect"
even though its from the same plant if picked early, the high will be a good high.
if picked at the right/ late season in some cases you get a stoned effect, from either plant.

EDIT:
Thats why most bud you buy, (or maybe its just me) will get you stoned.
They get more money for less because it is heavier,