A Kinsey Institute of Sex study finds that no single generation or gender agrees on a definition sex. Nearly 95 percent agreed that penile-vaginal intercourse is sex, but the numbers changed as the questions got more specific. For example, 11 percent would not use the phrase "had sex" if "the man did not come." About 80 percent of respondents said penile-anal intercourse meant "had sex." About 70 percent of people believed oral sex was sex.
