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1.
Porvoo is a city situated on the southern coast of Finland approximately 50 kilometres (30 mi) east of Helsinki.
A town with a large finnswede population and an long history of farming, fishing and catle breeding.

Also used to describe a person who can't understand something in a big city or just fails to do something. In this way it is used by most people in Helsinki.
You never been on a streetcar? Just go back to Porvoo.
by Evandar April 24, 2011