내 작은 배다른 여동생은 페니반이 무엇인지 알고 싶어하고, 나는 그녀에게 그녀의 인생에서 최고의 해부학 수업을 제공합니다

My shy stepsister wants to feel like having a dick inside, since in sexuality classes at her school she has seen a lot about those topics but she is afraid to consult with another person, and since we trust each other I teach her what it is.