they called it cause it came in a block, like a house brick. It was usually low grade, well it would have been good, but farmed on a massive scale with very little management, so plants male and female all in the same block of weed, then compressed really hard to smuggle it easier.
Often the weed was covered in mold spores, the smell most people recall is actually various molds developing on the blocks since they usually got packed before it was dry enough, and the seeds got popped leaking fluids etc.
it really was awful in most cases, but it was what people had. There were very few people growing seedless weed, known commonly as Sensi (sensimilla). If you got access to sensi, you really knew people.
What we can say, it is highly likely the strains we pay top dollar for today, originated from brickweed, monkey bedding, whatever people want to call it. Its much harder nowadays, but in the past it was possible to get a good quality seed from a landrace strain and i guess nowadays we dont get that so much. This is a little sad but it is a fact most landrace fields have already be cross pollinated with dutch seeds from wankers like Arjan who probably gave the locals his shit skunk, so he could access their real world genes they had. now he has what he wants, they have lost theirs original strains. Funny thing is, the guy takes no ownership for his role in the destruction of original genes.
but then he is the self proclaimed king of cannabis