"Yer man..." crops up all the time in conversations with my relatives (yes, we're Irish).From my buddies Dad (born in Ireland) "yer Man down the road".
Aussies have lots of good ones; here's two describing some one as crackers (or in English 'having a screw loose'):
He's got a roo (i.e. a kangaroo) loose in the top paddock
He's a prawn short of a barbie (Note. Aussies don't say shrimp except in that b. awful tourism advert - which unbelieavably was the work of the current Aussie Prime Minister in his previous job - he's still deservedly getting stick for it)