That is exactly what I mean, and I have not met anyone smoking pot that wasn't impaired, unless they took one hit and quit (but as you know, that is the exception, not the rule).
Perhaps a habitual user can not seem impaired after a small amount, like a drunk after only a few beers, but then you've got that habit thing going.
By "drunk" and "stoned" do you mean substantial impairment? Not all pot use leads to that.
That is exactly what I mean, and I have not met anyone smoking pot that wasn't impaired,
If you never knew anyone smoking pot that wasn't impaired to the point of equivalence with drunkenness, maybe you need to get out more. I've seen a number of times people smoke only enough to "relax" or "unwind" as is often done with a drink or two. (Or do you include "relaxing" or "unwinding" with a drink or two in your definition of "drunk"?)
unless they took one hit and quit (but as you know, that is the exception, not the rule).
It's common enough that there's a market in devices to accomodate the practice: https://www.google.com/search?q=one-hitter+pipe.
Still no qualitative difference between alcohol and pot.