Be the hokey

exp.

Heard in Waterford, Kildare, Meath and Tipperary

An expression of shock or incredulity.

In use

Did you see yer man lifting weights and his whole arse fell out on YouTube... Oh be the hokey it was pure mank!

Posh English

Did you witness that fellow lifting weights until his posterior gave way on the internet? Good heavens, it was utterly repulsive!

Same phrase, other counties