Scab

adj.

Heard in Longford, Galway, Wexford, Dublin and Sligo

Something terrible or awful.

In use

De scraw and stout was pure scab but I was so hungry I'd ate a farmer's toenail and wash it down with the sweat from his sock!

Posh English

The fare and the stout were thoroughly atrocious, yet I was so famished I could have devoured a farmer's toenail and washed it down with the perspiration from his sock.

Same phrase, other counties