A term coined from the star Zeta Persei of the constellation Perseus, named for the Greek God Perseus, slayer of Medusa, the female monster that feminists eventually embraced as representative of feminist rage. Zeta Male represents a slayer of the feminist monster.
Why didn't that guy show respect to that woman when he saw she could be placed first? He's a Zeta Male and lives on his own terms. Besides, what reciprocal obligation does that woman have to men but "choices".