What jokes have you made because of different customs?

I went to my boyfriend's house for the first time in the new year and experienced a different custom of New Year's Eve. ...

I go to my boyfriend's house for dinner. As a result, the people on the table didn't speak, and they were all eating silently. I'm really embarrassed. I thought my boyfriend's family didn't like me, so I didn't talk and I wasn't in the mood to eat. I sat silently, almost crying. As a result, after dinner, my boyfriend told me that the custom of eating New Year's Eve here is not to talk. ...

Why didn't you tell me such an important thing earlier?