The film “The Full Monty” is set in Newcastle, I believe? The Geordie dialect is notoriously tough - even for other English native speakers!
My sister and her husband once went to buy some shoes while passing through Newcastle (on the way from Scotland back to the South-West.) I remember her saying that they quite literally had to ask for another shop assistant - one who could communicate with them in standard English! :-0
EDIT:
I see the film is actually set in Sheffield not Newcastle. (It just goes to show that anywhere north of the Watford Gap is best avoided! :-D)