To behave more courageously and/or maturely: to behave like a grown woman as opposed to acting like a little girl. The female equivalent of grow some balls or grow a pair.
Evil right-wing bitch Ann Coulter should grow some ovaries and make amends to Democrats she slanders instead of writing libelous books accusing liberals (read: any civilized human being) of her own wrongdoings. BTA, she probably wasn't born with ovaries.
by Stop the Pendulum August 22, 2006