It pushed out passed my cock, pooling between her thighs.
I spurt another twelve, thirteen times into my sister, before my balls were temporarily drained once again.
We spent most of the day fucking. Often back-to-back, or we'd rest a few minutes to regain our strength. I had no problem getting up again and again on my own.
Late in the afternoon we finally stopped.
"We better get cleaned up before mom and dad get home," Tamara said.
I nodded, helping her changed the sheets on her bed. Then she showered and dressed, before I took a shower myself.
I felt like a new person. I had a hard time containing my excitement around mom and dad, but I did. I noticed the stone on my ring was orange once again.
Outside, the snow had started to fall heavy again, and the news informed us that school was cancelled again tomorrow.
Tamara and I didn't get a chance to do anything again with mom and dad around, and eventually I went to bed, by myself.