means hows it goin. . belfast
irishslang.info
In Belfast, if you enter a fast food takeaway and ask for a fish supper, the server may well ask "what's ur cawn" in a broad Belfast accent.  To which you might reply "fanta".  Over the years it has become commonplace to use this phrase as a greeting. So, instead of "what about ye?", you may say "what's ur cawn?".
irishslang.info

Term used to describe a male.

 

"Bout ye big lawd" - "How are you sir?"

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Hello
irishslang.info
Everything is going well. Reply to "What's the craic".
irishslang.info

boss is reference to anyone, it doesn't actually have a meaning

 

e.g. "well boss.....how are you this evening?" 

irishslang.info
irishslang.info
how are you?
irishslang.info
hello