A few minutes later, I was on my back, watching my twin sister bouncing up and down on my cock. We learned together within ten minutes that she could orgasm while riding me, and that gave us both confidence that making her orgasm in other positions might just be possible. But feeling her pussy clamp on my cock like a vice as she shuddered through more than one orgasm brought us both joy, as although I loved making her orgasm with my mouth, there's no greater feeling as man that having your lover orgasm while you're inside her.

Leaning forward, she was soon begging for her brother to cum inside...