Cur

n.

Heard in Waterford and Tipperary

An insolent, cheeky, or worthless young lad who deserves a ticking off.

In use

Yer nothin only a cheeky little cur boy, now clear off out of my garden!

Posh English

You are nothing more than an impertinent young scoundrel, now remove yourself promptly from my horticultural grounds!

Same phrase, other counties