Have a look to my Irish slang Dictionary,

Black Stuff : Guiness
Bollocks : Testicles
Bolloxed = Pist = hammered = really drunk
Bean-jacks : ladies toilet
Came here : Listen to me
Cheesed Off : very angry
Craic (pronounced crack)…..fun – this one is my favourite
Cute hoor :Untrustworthy/sly person
Culchie :country person
Deadly : Great
Dodgy : suspect/mechanically impaired
Eejit :Idiot
Fag : Cigarette
Feck : When you don’t want to say fuck
Fella : Boyfriend
Gas : Funny
I will in me arse : I wont
Jacks : toilet
Jaded : very tired, knackered
Jamming : having your period
Johnny : condom
Ma : Mother
Mot : Girlfriend
Massive: brilliant, deadlyMaster : the best
Messing : playing around or joking
Milling : fighting
Nuts : mad
Knacker : gypsy, Knackered : very tired
Session : Drinking all day long, typically starting before noon
Tenner : 10 Euros
Wanker : an idiot

And I know more! Can you put more here?