The thing to point out about Mary Jane is that it’s different now than back in the 60s. Natural, organic Mary Jane has a 1:1 ratio between THC drug and the relaxing, cannibus oil.
Nowadays, they’ve messed with the strains and grown plants with super high THC concentrations. I’m sure this is what the OP was referring to. This is why people say that you can’t smoke without getting high and there’s no middle ground. They are wrong theoretically but correct in practice. In theory, one could smoke a balanced plant and enjoy a relaxing time, like a few beers. In practice, I’m not sure those plants exist anymore. (You could move to Colorado and grow your own, haha).
A normal strain of Mary Jane,
is rather tame and not the same,
As a plant you’d get on the black market,
Or what’s sold out West, advertised as “the best”,
Because all that grows, whether cannibus or rose,
Was made by God, and He knows,
It has a use, by His design,
For moderation, like fine wine,
If only man would let be,
Nature's course, then we’d see,
Man and plant have a medical synergy.