It's easy to tell the difference between general Geordies and charvs - charvs seem to all be very nasal and they say 'leeeayak' for like, which is CHARV not Geordie and really p's me off.
Also the Burberry, and the fact they wear 7 layers in this heatwave is a bit of a giveaway. Obviously they haven't the intelligence to work out that if you take off a few layers, things get cooler.
What my mates from uni realised, that I didn't know was a Geordie thing, was when we say 'wuh' instead of our i.e:
'We're getting wuh results today'
Sounds a bit weird when I write it down but I don't notice myself saying it, and my accent isnt even that pronounced!