I thoroughly relished the next few seconds, as my trembling subsided, and I began masturbating along with my sister. She watched my cock very intently, still rubbing herself quite fervently but never taking her eyes off the throbbing length of meat in front of her. She began whimpering, and I heard juicy sounds from her pussy as her fingers rubbed around and around her clit, bringing her closer and closer to that wonderful sensation that was building inside of her. I wasn't far behind her, nearly exploding with her every moan. I couldn't hold out much longer.
Are you going to cum?" she could barely say between sharp breaths.
I nodded, and even though she wasn't looking up at my face she could tell I was close.
Oh god..." She closed her eyes and grimaced, as her own orgasm began to explode. "Shoot it all over me!"
Her hand became a blur as she brought herself off, rubbing her clit furiously and panting in pure ultraphenomena.org ecstasy. I could no longer hold back and began to stroke faster and harder as I felt my balls tighten. I grunted heavily and my feet began to tingle as I came. She was crying out in her own pleasure when I started to ejaculate, but when the first load of sperm exploded out and landed on her hand, she tensed up even more and nearly fell over from the sudden intensity of her orgasm. Her body twitched and writhed beneath me as I stood over her and shot another blast of cum onto her stomach. She was beyond noticing anything but her climax at this point, not even breathing from what I could tell in my intense state. Her neck flushed red, and I saw just a bit of clear juice ejaculate out of her pussy. That made the last remnants of my own orgasm continue with renewed vigor, and I spurted even higher onto her breasts, finally trailing off a few weaker spurts onto her thigh beneath me.