Womb...there it is

[...]Vagina envy denotes the envy men feel towards women for having a vagina. In Psychoanalysis and Male Sexuality (1966), Hendrik Ruitenbeek relates vagina envy to men’s desire to be able to give birth and to urinate (higher flow rate) and to masturbate in ways physically different from those available to men, and that such psychological envy might produce misogyny in neurotic men.[...]
http://en.wikipedia.org/wiki/Womb_and_vagina_envy