Mouldy

n.

Heard in Mayo, Cork, Galway, Kildare, Carlow, Limerick, Westmeath, Wexford and Longford

Extremely intoxicated, to a level verging on alcohol poisoning.

In use

I was mouldy drunk, I cudn't spell me face!

Posh English

I was exceedingly inebriated. I could scarcely spell my own name.

Same phrase, other counties