Spanner

v.

Heard in Sligo, Cork, Dublin, Limerick and Wexford

An awkward, foolish, or clumsy person.

In use

Yer sucha spanner droppin' the bag of spuds in the muddy lane!

Posh English

You are such a clumsy fellow, dropping the sack of potatoes directly into the mire.

Same phrase, other counties