The issue of "taboo" and the issue of "crossing boundaries inappropriately" are related, but not identical, IMHO.

Cobra, what if it was your WIFE who said to your son, "The girls are just jealous because they do not have a 'winkie,' and yours is a nice big one."

Would you consider that appropriate in any household?

Anyway, you didn't address my remark: "What we're saying is that, mother or no mother, it is not appropriate for a father to make teasing comments about his daughter's budding sexuality, even if that is the normal, harmless way that guys interact with each other."

I'm now through with this discussion, too.