Still no one moved and no one said a word. Penny stroked Zena's beautiful pert bum and then nudged her forward. Zena did not resist the nudge, the momentum of which resulted in slow steps forward. I knew what was going to happen. I was going to see my brother-in-law take the virginity of my daughter. I got up and sat down on the adjacent sun lounger. I wanted a ring side seat. Zena had made her way over to Mark. She was standing next to his lounger staring at his semi hard cock. As if to draw more attention to it, Mark took it 'in hand' and started to...