Knackered

adj.

Heard in Wexford, Dublin, Galway, Kerry and Monaghan

To be extremely tired. It comes from the original meaning of the word Knacker and not the modern derogatory term for a member of the travelling community.

In use

I'm knackered after the weekend!

Posh English

I am utterly exhausted following the weekend's exertions.

Same phrase, other counties