The Ecclesiazusae by Aristophanes

THE ECCLESIAZUSAE (translated variously as 'women in power'), group of Athenian women led by Praxagora sneak into the Athenian assembly disguised as men and vote the women of the Republic into power. In this hilarious farce, the women enforce an odd brand of equality through a Socialistic government; men are allowed to sleep with every woman, but they must sleep with an ugly one before a beautiful one.