Up the duff

Lynda up the duff—what odds do you put on that, eh, Mr Clever Dick, eh? That's shut his gob. That's put a crease in his brand-new suit.

At 19, he was married (‘only because she was up the duff’ he explains gallantly).

“Well, when he found out that my gran was up the duff, he went back to his native Norway (or it might have been Sweden)[…].”

It just means that some daft wee hairy that gets knocked up the duff has tae get oan the bus tae Carlisle tae get cleaned oot.

The great coalface of fuckwits; the fly-by-nighters, who do their five years in Bondi, befriend a Roosters player, get a good coke dealer, meet some tight westie bitch who′s moved here while she works a job in PR, they fall in love, she gets up the duff and then they have to buy a house in Condell Park and they′re gone[…].