Portmanteau of "Western" and "Metropolitan" – a culture that is dangerously 'global', crudely pop-centred, commercial, consumerist, capitalist, obsessively metropolitan, and one-dimensionally sectarian.
Perfect example? The United States of Hollywood and McDonald's. Heads up, R of P - you're on the Westro wannabe list.
I don't know about you but I am proud paganus to the death.