[QUOTE=Kimstu]
Not without one of those operations, you won’t. 
Thanks! Huh. “You” as in “you American blokes”? So “tha” is second person plural as well as singular?
[/QUOTE]
It can be said “Tha” or “Tha’s”.
E.G.
“Is tha goon doon tay si thi fitba oon Satoorday” (I say are you going to the football on Saturday)
"Tha’s nobbut missen " (There is nobody but myself)
All clear now hin? 
Incidentally I am not from the North East (Geordieland) I’m from the North West where we talk reet proper me 'owd cock
[QUOTE=devilsknew]
What I wanna know is Ali G’s accent for real? Have any of the Londoners here come across anything like that in real life, or is it heavily embellished and made for TV
[/QUOTE]
I teach many, many students from West London, primarily black (a fair few of these are of Somali origin) or Asian (by which I mean Indian, Pakistani, Bangladeshi origin). So the accent is very familiar to me. They are for the most part able/willing to moderate it according to the situation, often switching to a very different accent, if needs be.