JOHANN Lamont was a woman on a mission yesterday:

to make Alex Salmond squeal by cutting his quirks off.

Because FMQs is political theatre, if he's ever cornered by a fact, Mr Salmond knows he can usually escape through stagecraft alone.

A fruity quote, an eyeroll, a chortle at nothing in particular and a random reference to the bedroom tax, and he's off Scot free.

Hence the Labour leader tried to rob him of his mannerisms and leave him naked in the stalls.

It started with the latest awkward report on the economics of independence.

The Institute of Fiscal Studies predicted either tax hikes and spending cuts to cope with declining oil and a granny glut.

So far, so so-so.

But then, from Ms Lamont's full-length leather apron, a flash of the gelding shears.

"With a cock of the head and an indignant sideways look, could the First Minister tell us why the IFS is scaremongering like this?"

Mr Salmond looked offended. He does a good offended. His eyebrows sag like hammocks.

"Presumably," Ms Lamont continued, "we'll just get younger under independence: £300,000 of Oil of Olay for every man, woman and child.

"Chuckling at his own jokes, could the FM tell us why the people should believe him?"

Mr Salmond steepled his fingers and sighed.

The IFS report hadn't undermined his position, it had actually validated it, he claimed.

He cited a whole paragraph as proof.

Moreover, Labour was in no position to preach.

"The current economic adviser to the Labour Party is the Rev Paul Flowers [of cocaine and Co-op fame]," Mr Salmond observed.

"I don't think that's... a tremendous indication of what the future holds."

Ms Lamont had evidently missed her target.

The cheeky chappie was alive and well.

Tory Ruth Davidson vainly picked up the sarcasm baton, asking if the IFS was part of a vast conspiracy or had "just done the sums".

But the FM wasn't playing.

"When Johann Lamont talked about the aging profile of Scotland, I thought she was talking about the Conservative Party," he shot back.

Emasculate Alex Salmond at FMQs? It was always mission impossible.