A provincial, typically residing in the western half of Pennsylvania (
USA), who strongly identifies with the nearby city of
Pittsburgh, Pennsylvania, often due to a fervent, pseudo-religious
loyalty toward one or more professional sports teams headquartered there. "Yinzers" are so called because they speak a regional dialect of American English featuring the
use of "yinz" or "yunz" as the second-person plural pronoun. Yinzers are the subject of a number of stereotypes, some of which they are actively proud and consciously reinforce to strengthen their sense of identity, an example being their use of French fries as a condiment.
Traffic in Pittsburgh is very
bad this afternoon; a veritable
army of YInzers has descended on the city due to the baseball
game.