North/south rivalry

Many Perth residents define themselves as living either north of the river or south of the river. As Perth has grown dramatically in recent years, and development has been mainly on a north/south corridor running parallel to the coast, this separation has grown with (highly dubious) claims that one never goes to the other side, or does not associate with others from the other side. These claims are generally made light-heartedly. Some businesses do trade with a 'north of the river' phone number, and a separate 'south of the river' number.