Name for any sort of effort that is not merely a failure but such a complete disaster it brings about the opposite of what it was supposed to achieve.
He crossed the ball perfectly but then the striker completely Theresa Mayed it; fumbled and ended up giving the ball to the opposition who scored immediately.
That flat-pack table youâve been making all day collapsed when I put a teaspoon on it. You completely Theresa Mayed it.
I became Prime Minister of my country but it turned I lacked every one of the necessary skills and totally Theresa Mayed it.