The role and functionality of injunctive norms is an understudied phenomenon within sexual communication processes. Using the theory of normative social behavior (TNSB), the present study examined emergent peer-oriented and authoritative injunctive norms as they relate to the context of parents discussing pornography with adolescent children. Findings from a multicase, qualitative analysis of 33 in-depth interviews from parents of middle schoolers revealed several injunctive norm patterns. Observations included disparities within messages shared by influential peers concerning parent-child pornography communication, insight regarding peer-judgement versus peer-support, tensions between previous closed communication family patterns, and a recognition by participants that open parent-child communication about pornography is needed. Suggestions are offered for educators and practitioners to more fully evaluate the role of injunctive norm messaging in efforts to share positive messages about parent-child pornography communication.