Bog

n.

Heard in Sligo, Leitrim, Antrim, Tyrone, Dublin and Donegal

Rural areas around Sligo town, especially neighbouring counties such as Leitrim, Mayo and Roscommon, considered unsophisticated backwaters.

In use

Leitrim is susha bog

Posh English

County Leitrim is such a frightfully rustic backwater.

Same phrase, other counties