Only 20 percent of college students participating in a Guttmacher study defined “oral-genital contact” as “sex.” There was resounding agreement, however, that vaginal (98 percent) and anal intercourse (78 percent) do count as sex.
The survey of 477 university students was conducted in 2007 and reveals a dramatic change over the years: A similar poll taken in 1991 found that twice as many university students defined oral sex as for-real sex.
The Guttmacher study blames this shift on “the Clinton-Lewinsky effect.”
Full story: Bill Clinton was my sex-ed teacher – Broadsheet – Salon.com