Do you have a long list, ask the child to memorize those, then do a multiple choice test where they identify the items they aren't supposed to talk about?
We suppose you could do that, but we wouldn't recommend it. Remember at the very beginning when we said that repetition was key? The other key point is being concrete and specific.
Kala's mother needs to tell her that we do not discuss other people's sexually transmitted diseases. In fact, we don't discuss anything about other family member's sex lives. That is wrong and people won't like you if you do it. The next week, when Kala asks Aunt Myra about some other inappropriate topic, you need to explain that we don't discuss that with people, either.
I certainly hope my mother-in-law does not read this section
It can also work to have role-playing with your children. When my children were about to meet my future husband's mother for the first time, my mother thought it would be a good idea to have the children practice meeting someone. She told them,
"When you meet someone for the first time, you should shake their hand, say 'Pleased to meet you,', say their name and then say something nice about them."
My nine-year-old daughter walked up to my mom, shook her hand, and said,
"Pleased to meet you, Mrs. De Mars, you're not nearly as fat as I'd been led to expect."
My mother explained that it probably wouldn't make Dennis' mother happy to know that he had talked about her weight and it might hurt her feelings. She told my eight-year-old to try next. Her effort was,
"Pleased to meet you Mrs. De Mars, it looks like you lost a lot of weight."
My mom then explained that would be a good thing to do, if you had actually met the person before. It took a few tries, but they finally got it down and my mother-in-law did not smack her son right after she met my children for the first time. In fact, she complimented us on how polite they were - if she only knew!
Next page: learning more about social skills