Ask the average member of the House of Commons what "the dab" is and the chances are they will tell you it is a type of radio.
(And don't even think about inquiring in the House of Lords, famously described by a peer this week as the "best daycare centre for the elderly" available).
But no more.
The craze that has swept many a dancefloor has now reached the floor of the Commons chamber.
To be fair many MPs have performed the dab before they just did not know it, because famously the move has all the same hallmarks as sneezing into your elbow.
But that did not stop Labour's deputy leader Tom Watson.
He spied his moment as Labour leader Jeremy Corbyn sat down after telling Theresa May “we need a government that puts out NHS first and will invest in our NHS”.
With that Mr Watson threw his arms out in front of him.
Before fellow members of the shadow frontbench could ask what he was doing he then swung his arms to the left, in the “dab” style.
As well as sneezing, it looked slightly like he was attempting to play a funny kind of air guitar.
As “burns” go it was hardly a Barack Obama-style ‘drop the mic’.
But it did appear to unsettle the Tories, a number of whom started doing a dab back at the Labour benches.
MPs often try to distract the opposition when they are appearing at the Dispatch Box.
David Cameron was visibly rattled when shadow chancellor Ed Balls used his hand to signal that the economy was "flatlining".
Politics fans have seen the dab before, of course.
Hillary Clinton dabbed on The Ellen DeGeneres Show last January.
And just last month the 17-year-old son of an American congressman dabbed at his father's swearing in, confusing the House Speaker Paul Ryan.
But there is bad news for Mr Watson, 50.
As early as January last year people were claiming that the craze had “peaked”.
With its introduction in the House of Commons, never knowingly a hotbed of cool, is it now, whisper it, dad dancing?
In fact when the swearing in dab happened the Washington Post claimed the dance had made a “comeback” and “was supposedly dead long ago”.
Will MPs succeed where teenagers have failed and kill off the dab for good?
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