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sex strike

n. a strike, in which one or multiple persons refrain from sex with their partner(s) to achieve certain goals

Wikipedia
Sex strike

A sex strike, sometimes called a sex boycott, is a strike, a method of non-violent resistance in which one or multiple persons refrain from sex with their partner(s) to achieve certain goals. It is a form of temporary sexual abstinence. Sex strikes have been used to protest many issues, from water resources to employment equity.