go away

A way of a sales assistant asking if you are being served

how you say hello in irish

this is not technically slang.

you response by saying Dia's Muire dhuit.

means hows it goin. . belfast

Usually said before or after another word, boss means sir.

e.g. "Hi Boss!" or "What's the craic boss?"
how are you?
A popular greeting of those of whom cant be bothered to say "Whats the craic?"
Everything is going well. Reply to "What's the craic".