had bikes for donkies years
Eng trans: 'Had biccies for donkey's ears'
in other words, as a child, he had prominent ears – like a donkey. Kindly folks gave the lad biscuits to comfort him.
it's got a bit damp oop t'north
Eng trans:
Now that he's older, he's also got water on the brain.
In Gambalunga it suggests
Eng trans:
Gambalunga = a kind of Neverland, where bikers never grow up.
fish and chip run from Skipton to Whitby
Eng trans:
A phrase that means, 'stating the obvious'.
I.e. everyone knows that anyone would run from Skipton, even a fish wot don't even have any legs.
rather be at home polishing their clogs
Eng trans:
clogs is rhyming slang for dogs
polishing is difficult to tranlate