Is it normal for brother-in-law and sister-in-law to joke?

Brother-in-law and sister-in-law should be regarded as a family. Normal chat, just kidding, normal. There is nothing to make a fuss about, but there is no absolute thing in the world. If you joke more than ordinary people should say, you can't guarantee that their jokes are completely normal. After all, anything can happen in the world.

The premise is that normal jokes are ok, as long as they are at home or in public, and if they are two people who often joke alone, they should pay attention.

Nowadays, people are more open-minded. They must have felt a little unnatural before, but now they should be fine. It should be normal for relatives to make a joke.