While 82 percent of college-educated men made “mouth contact” with their wife’s breasts during foreplay, only 33 percent of men without high school diplomas did the same.12 When lesbians were surveyed in a related report, a mere 24 percent reported caressing their partner’s breasts, and yet 95 percent of this “female homosexual” group achieved orgasm—a much higher proportion than the women engaged in heterosexual activity.13 These data points suggest that breast-related sexual activity is a learned behavior of greater appeal to men.

