Sure I know what it means do not muzzle thine ox whilst he is threshing.
The ox would eat the grain while threshing and one would want to put a muzzle on so that ox would not eat into his profit. The Torah said you cannot do that.
Last Ellul, my wife, who is very dear to me but worth every penny, was doing what many (most?) women do in the evenings… she was on the phone (to her best friend who happens to be a dikduk morah). These phone calls take place religiously 3 times every day ??? ????? ???????. Sometimes with a long ???? aswell. But never a ?????!
So I gave my wife a note saying that I wish her and her friend a ????? ?????? ????. Obviously she said that I had made a spelling error as ????? is spelled with a ?? not a ???. No I replied. I meant it this way and I hope you figure! After another long discussion they eventually did!