Anne Coughlin, a professor at the University of Virginia and an expert on feminist jurisprudence, has written that extra-legal sexual codes infantilize students. That offends those who believe there is a rape culture on American campuses.But every parent should certainly consider this: If the complications of human sexuality and its often ambiguous mating dance defy consistent definition by the intellectual candlepower of entire university faculties, what advice should you give children who might still be in their teens as they head off to college?