"Sexual taboos" refers to societal or cultural restrictions, limits, or prohibitions imposed on certain sexual behaviors or discussions that are considered inappropriate, morally wrong, or socially unacceptable. Full definition
The increased competition for mates, coinciding with the arrival of the birth control pill, helps to explain a number of things, such as the collapse of sexual taboos as young women began to offer free samples and to pursue men previously considered off limits (such as other women's husbands). (firstthings.com)
Considered as contemporary Shunga (erotic art), or Yokaiga (ghost and monster art), the work cleverly mixes eroticism and provocative elements along with black humor, aiming to unveil various sexual taboos within conservative Japanese social society. (juxtapoz.com)
Among other themes, it describes the festival calendars, lists sexual taboos, deals with personal cultic purity and presents the Sabbatical and Jubilee cycles. (religion-online.org)