bally

Bally comes from the Irish word Báile meaning homeplace or town.

There are many towns in Ireland containing the prefix Bally.
Examples are Ballymena (Co.Antrim) An Báile Meánach, The Middle Town; Ballymoney (Co. Antrim) Báile an Mhonaidh, The Town of the Moor; Ballymote (Co. Sligo) Báile an Mhóta, The Town of the Mound; Ballynahinch (Co. Down) Báile na Hínse, The Town of the Holm; Ballymore (Co. Donegal), The Big Town

slut

slut is an acronym for sexual liberties usually taken

Her slut behaviour astounds her female neighbours. They wish they could be so lucky.

GAA

GAA is an acronym for Great Arrogant Assholes

The GAA (Gaelic Athletic Association) ban Irishmen not of their particular
persuasion from joining in their games. They really are GAA