Surely from "The wee coupar o' Fife"

"There was a wee coupar wha lived in Fife,
nickety nackety noo noo noo.
And he had gotten a gentle wife,
Hi willie wallacky,ho shawn dougal ah,
Rain caw rashety roo roo roo.

The song describes how the coupars wife was so high born that she would do no work about the house.
Because of the lady's high station, the coupar felt that he could not beat her for being lazy, but hit on the cunning plan of laying a sheepskin on his wifes back and beating that.

All good Scottish misogyny.

I think I remember a few verses for all you misogynists...Ake