Generic term generally used by blokes about blokes.
Term of admiration for those Aussie males who are muscular, well built, athletic and bronzed.
Examples: Most Australian Rules Footballers, Rugby League players and Pub bouncers are highly likely to be “built like brick shithouses.”
However, there is a catch, most of the aforementioned blokes are regarded as “not the full quid” or a “six pack short of a slab (of beer).”
In other words “not too bright’ or a “moron” which can be very dangerous language to be using around “brick shithouses.”
It generally results in the slanderer saying, “I had the shit pounded out of me by a brick shithouse”