Rats arse
Heard in Tipperary
An expression of complete indifference or lack of concern.
You can't go ta town in dat get up paddy, well tom tis like dis, I couldn't give a rats arse dis minnit, it's donly rig out I have.
You cannot possibly attend town in that attire, Paddy. Well Tom, it is like this, I could not care one jot at present, as it is the only outfit I possess.