zài / zhèng / shì / chǎng / hé / duì / zhǎng / bèi / kāi / zhè / zhǒng / xiè / nì / de / wán / xiào / bìng / bù / hé / shì

在正式场合，对长辈开这种亵昵的玩笑并不合适。

In formal situations, making such disrespectfully familiar jokes to elders is inappropriate.