付之一笑 make a joke of something

make a joke of something 付之一笑

you should not make a joke of people's hardships.
不应该拿别人的困难开玩笑。

They made a joke of their boss' ability.
他们笑话老板的工作能力。

She is making a joke of her exam results.
她对自己的考试成绩付之一笑。