Cum-Eating Sis: A Tale of Self-Pleasure and Playful Sibling Rivalry

I couldn't sleep. The night was hot and stuffy, and my mind was racing with dirty thoughts. I reached into my boxers and started stroking myself, imagining all sorts of filthy scenarios.

But just as I was about to finish, I heard a creak. The bathroom door across the hall had opened, and my sister Sandra was getting ready for bed.

My heart raced as I quickly hid my hand and tried to act casual. I couldn't believe I was about to see my sister naked.

Sandra started undressing, completely unaware that I was watching. She had always been confident and comfortable in her own skin, and it was kind of hot.

I couldn't help myself. I started stroking again, faster this time. I was so turned on, I could feel my orgasm building.

Just as I was about to cum, Sandra looked up and caught me. "Ew, what are you doing?" she said, but there was a hint of amusement in her voice.

I was so embarrassed, but also so horny. I couldn't stop myself from cumming, and a few drops landed on the floor between us.

Sandra's eyes widened, but then she started laughing. "Gross, you're such a pervert," she said, but she didn't sound mad.

I was still mortified, but also kind of excited. I had never felt this turned on before.

Sandra finished getting ready and headed back to her room, leaving me alone with my thoughts.

I couldn't believe what had just happened. I had never been so turned on by my own sister before.

I got up and cleaned up the mess I had made, still feeling guilty but also curious.

I couldn't stop thinking about Sandra, and how hot she had looked getting naked. I wondered if she would ever let me see her like that again.

I decided to take a risk and knocked on her door. "What do you want?" she said, sounding annoyed.

"I just wanted to apologize for earlier," I said, trying to sound sincere. "And to ask...would you ever let me watch you again?"

Sandra raised an eyebrow. "Are you serious?" she said.

I nodded, feeling more nervous than I had ever been.

Sandra thought for a moment, then smiled. "Fine," she said. "But only if you promise to be quiet and not cum on the floor again."

I nodded eagerly, feeling a surge of excitement. I couldn't believe this was happening.

Sandra opened the door wider, and I caught a glimpse of her naked body again. I couldn't wait to see what happened next.