性交 FUNDAMENTALS EXPLAINED

外观 资助维基百科 创建账号 登录 成熟内容 个人工具 资助维基百科阴茎插入前，如果没有备孕准备，一定要戴安全套。缓慢插入后，逐渐加快做活塞运动。女方也可手扶阴茎协助完成插入，避免男方因不熟悉女性解剖结构而插入失败，降低性交疼痛。月神之星的�

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