Essentially, as a society, we have this idea that women are these crazy, gold-digging humans, who cannot be trusted when it comes to sex. These women we have conceived in our minds hold so much sexual power over men, that men find themselves helpless around them, and more specifically, towards their sexual prowess.
This is the innate assumption when we advise women to not walk alone at night, or not to dress in a certain way. It essentially presupposes that if men see a woman, drunk, at night on her own, or looking somehow vulnerable, he will be so enticed, aroused and more importantly tempted, that he will not be able to control the urges provoked by the sight of this drunk fiend.