There’s something hypnotic about Michaelia Cash in high dudgeon.

It was very nearly a relief to see her, eyes flashing, embracing splendid indignation, because the last time we looked, she couldn’t be seen at all - she was behind a great big whiteboard.

“You think you were surprised? You should have seen my face!” she cried in marvellous, irony-free umbrage.

Senator Cash denied she’d had anything to do with requesting the whiteboard to hide her from the cameras as she entered a particularly awkward estimates committee early this year, declared she was as outraged as anyone when she saw it, and blamed parliamentary security, which she said had taken full responsibility for the fiasco.