My sister's hips pushed upward and then she kicked the bed so hard that our bodies twisted. I squeezed her hands tighter, hanging on. My c**k was throbbing, threatening to go over the edge with her. I had a huge load of c*m churning in my balls that wanted release. But I wasn't ready to finish so soon. I didn't know how long it might take me to recover if I did. So I clung to her, enjoying the sensation of her p***y as it clenched repeatedly around my c**k. Her orgasm stormed through her. Her body was literally vibrating in my arms. I felt like I was riding the waves of a violent, storm-laden ocean.
Her moans slowly grew quieter, but lasted longer at the same time. It reminded me of someone who was shivering from cold, who couldn't stop making noise. Her body stopped thrashing, but tremor
