The part of “no” I don’t understand

It has been popular for years now to express exasperation by asking “What part of ‘no’ don’t you understand?”

For me, the part I don’t understand is when people say no without even wanting to know the question. They say no because it’s more convenient. They couldn’t be bothered seeing others as human beings who just have a different agenda – people who are “not taking ‘no’ for an answer”, something we are encouraged to do to get ahead in life.

Saying no without explaining why – that’s the part of “no” I don’t understand. So now you know.