Someone who is not in the "game" of pimping and hoeing.
Drugs usually being apart of that too. Those who are in the "game" consider squares to be uncool/boring. For instance, if you
work at a strip club as a dancer and don't have a pimp and don't want one, you are considered a square. Square hoe- someone who prostitutes without a pimp; square- someone who doesn't do any of that. It is a whole sub-culture
people don't know about unless they are in it.