Just out of curiosity: What do you say when you are referring to the female genitals in your family, when you are talking to your kids? Do you have like a nickname for it? Eg. referring penis as kuku bird.

I taught my children the proper names of their genital, i.e. vagina and penis. During normal days, we will use nickname to call it instead. In our dialect (foochow), we called female's one 'kipkip' and male's one 'bibijiu'