have fun at [sb]'s expensev exprverbal expression: Phrase with special meaning functioning as verb--for example, "put their heads together," "come to an end."
(joke about [sb])
拿某人开玩笑 ná mǒu rén kāi wán xiào
笑话某人 xiào huà mǒu rén
The media is currently having a lot of fun at the disgraced politician's expense.