And I am struck because we don't even use the word, "ass", rather we use the word, "arse".
To us, the word, "ass", is an American expression or an Americanism.
I have tried to draw attention to this American habit by describing it as scatological. But this only seems to draw laughter when I am being deadly serious.
I have also tried to draw attention to its aetiology or cause in toilet training. But this only seems to cause general merriment rather than understanding.
But such training at a very early age when we are vulnerable and dependent on a powerful parent, marks us for life.
Such training reveals the quality of the child rearing practice to which we have been subject.
And naturally we repress the humiliation and emotional pain of such training and so we are unable to consciously express our humiliation or give it voice.
So we express our emotional pain by acting it out, mainly with our own children.
However it also overflows into normal life when we call someone, "a donkey's ass".
And the phrase, "a donkey's ass", perfectly expresses the contempt with which we were treated by our own parents.
But this contempt by powerful people on whom we were dependent for our physical and emotional well-being is too painful to bear. And so we just pass it on to others.
But rather than passing it on, we are starting to wake from the nightmare of childhood.
And rather than humiliating our children, we are starting to help them achieve their goals.