Brandon watches a perfectly-innocent video of his sister

I couldn't sleep at all that night. I tried smoking, watching TV, jerking off--Nothing helped. I just kept thinking about my sister, her swollen belly, the weird mess all over her... And for some reason that I couldn't yet understand, the image of Mom's mysteriously-bulging towel from our afternoon by the pool kept popping into my head.

Finally, I decided to go downstairs for a midnight snack. But as I tiptoed through the dining room, I saw a soft blue glow... My sister's laptop, left open and turned on in the middle of the table.

Weird... She never leaves it downstairs, I thought. Moving closer, I took a peek at the screen. A video file was open, paused on a view of... Our house? Is that the wallpaper from the upstairs hallway?

I pressed play, and watched as the camera moved slowly down the hall. Then it turned into my sister's bedroom--The door was open, and there she was... Lying facedown on her bed... Wearing nothing but a pair of bright-pink panties.

I knew that I should've turned off the video, but I was too stunned (and too horny) to move. I watched agape as the camera moved closer, pointed right at my sister's bubble butt. She must've heard someone approach, because she turned her head and said something--I wish I knew what, but there wasn't any sound.

Then the POV moved closer still, as the mysterious cameraman climbed up onto the bed. A chill ran up my spine as I saw something poking into the bottom of the frame: a big, fat, fully-erect penis. I'm talking pornstar big, here--Big enough to cover most of my sister's butt as it slapped down between her cheeks.

Ella giggled, making no move to stop the stranger as they worked their shaft back and forth a few times, rubbing it against her panties. The video was pretty dark, but I thought I saw a little burst of pre-cum splatter against her back, leaving the cockhead sticky and glistening.

Then my sister flipped around, pulled her legs up, and sat cross-legged. Not an unusual pose, given Ella's small frame and flexibility--But the fact that she was staring at a huge dick made it slightly less adorable.

Next she leaned forward, folding herself like a yoga pro--Only instead of pressing her forehead to the bed she kept her face towards the camera, moving closer and closer to that massive, throbbing tool... Then stuck out her tongue, licking the tip... Tasting the pre-cum, and smiling all the while. I almost breathed a sigh of relief as her probing, flicking tongue pulled back--But I was stunned anew when she started licking the soles of her feet instead.

Things soon became more clear (if you can call any of this "clear") as the cock thrust forward, and Ella eagerly sandwiched it between her soles. Working the thick shaft with both hands and feet, my sister bit her lips and glanced between the huge member and the shaking camera... Or maybe she was looking at whoever was behind it?

I was so swept up in that intense, loving gaze that I almost missed seeing the cock explode, sending a fucking fountain of jizz splattering all over my sister's feet, legs, ass, and crotch. Some of it landed on her belly, too, which was still a bit swollen.

I realized with a start that this must've been filmed recently--Today, even. Who the fuck is this guy? I didn't think Ella had a boyfriend... Let alone a freak of nature.

The video ended there, but I stayed frozen in the dining room for several minutes... Alone, in the dark, with a huge erection straining against my pants. My hand shook as it finally moved, and I had every intention of closing the laptop... But instead my tremoring fingers hit the play button, and I watched wide-eyed as the clip started over.