At first glance, you might say the term "moneymaker" is degrading, implying as it does prostitution. But the truth is women carry huge financial power in their loins. Men will pay any price, literally and figuratively, to get between a woman’s legs. If women harnessed that power—especially in youth when interest rates are highest—we’d probably be able to retire by age 40, about the time interest rates start to decline.
For more terms for women's genitals, see Lady Jaided's Twatchamacallit column.