Joe, when you say "I can't understand it", do you mean you can't pick the lyrics out because of the accent, or do you mean that the meaning of the lyrics is hard to make out, due to the very specific social context?

I, being married to a Geordie, have no problem with the accent and having grown up in a grocers shop giving back the deposit on Lemonade bottles I have no problem with the concept of "pop bottle pennies"...