the absurd assumption that all Polish women (and men for that matter) are exactly the same,
Feminists have been in the forefront to suggest that men and women are the same and any differences are social constructs.
Sometimes women cry for no apparent reason. They won't admit it is often hormonal unless they need some excuse for their violence or some dastardly act they've committed. Then it's okay to use the 'gender card'.
Of course, if you really want to make a woman cry (I don't suggest it because it is spiteful) then tell them you are leaving them for another man.