You see, only ducks (and some geese) actually evolved genitals in response to male ducks’ proclivity to force sex on unwilling females. Tim Birkhead at the University of Sheffield examined duck vaginas and phalluses and published a study, as reported by Andy Coghlan at New Scientist, that showed that female ducks evolved long corkscrew-shaped vaginas with multiple “pouches” to prevent sperm from forced copulation from reaching its eggs. (via Does ‘legitimate rape’-defining Missouri Rep. Todd Akin believe women are really ducks? | The Raw Story)
QUACK QUACK!! oh wait..I’m actually not a duck and can’t “shut down” my reproductive organs if some shit happened to me.