Muta mata
Heard in Cork
A fool. Also: a very bright individual who always gets the upper hand and makes the opposition look foolish.
He's a right Muta Mata" "They laughed when that muta mata told them disaster was coming, but he sure got the last laugh when it did.
He is a perfect fool. They laughed when that clever fellow warned them of impending disaster, yet he certainly had the final satisfaction when it arrived.