Unbefuckinlievable
Unbefuckinlievable is Irish slang for completely unbelievable, in a good or a bad way.
All over Ireland
Also spelt Unbefeckinlievable
He missed an open goal from two yards, unbefuckinlievable.
Any good?

Ah, a visitor! Would you like me to translate 'Unbefuckinlievable' in use for you?
He failed to convert an unguarded goal from a mere two yards. It quite beggars belief.
Questions
What does unbefuckinlievable mean in Ireland?
Completely unbelievable, in a good or a bad way.
Where in Ireland do people say unbefuckinlievable?
People say unbefuckinlievable all over Ireland.
How do you use unbefuckinlievable in a sentence?
“He missed an open goal from two yards, unbefuckinlievable.”
Updated