Why do women use the term "make a father proud" while having sex but they don't mean it?

I find it quite disgusting when I see a lot of videos of women using the term "make a father proud" while having sex with someone who is not their father. I find it strange and unusual. For me it is like a father-daughter thing and this is not what you want to involve in your sexual life...<br><br>&#x200B;<br><br>Edit: I don't mind the term itself, I just mind that they don't actually mean it. It should not be used as something to spice up sex and it should not be taken as a joke.