"The early 1990s witnessed the dawn of “hookup culture” at universities, as colleges stopped acting in loco parentis, and undergraduates, heady with freedom, started throwing themselves into a frenzy of one-night stands. Depending on whom you ask, this has either liberated young women from being ashamed of their sexual urges, or forced them into a promiscuity they didn’t ask for. Young men, apparently, couldn’t be happier."