Humping under a spotlight

I was watching the clip for the seventh time when I heard a noise from the back patio. My hair stood on end as I listened: there was a scraping noise, like furniture getting dragged across concrete, then a few thuds and a long, drawn-out moan.

Petrified, I forced myself to put one foot in front of the other until I was standing at the kitchen window.

The deck furniture had clearly been moved around: the table was sitting much closer to the house than usual, just under the dim porch light. That allowed me to see something... Amazing? Horrifying? Either way, I stared transfixed at what was going on atop that flimsy wooden table.

My sister was lying facedown on it, wearing nothing but a T-shirt. Her bubble butt was sticking in the air... Just as beautiful in real life as it was in the recording. More beautiful, even, since it was bouncing and jiggling in time with the ruthless, powerful thrusts driving between her cheeks. I couldn't see the person doing the thrusting, since they were standing beyond the reach of the dim light... But I didn't need to be a detective to know it was the same person from the video I'd just watched.

A thick, foot-long cock was humping Ella's ass, each stroke drawing out a cry of pleasure and pain that could be heard even over the creaking and groaning of the overworked deck table. It's a wonder it didn't collapse beneath the sheer weight of the mysterious shadow's plowing, or crumple as Ella hung on to both edges for dear life. Her knuckles were white, her back arched, and on her face... A look of pure, unadulterated ecstasy.

After several minutes of rough anal fucking, the table was visibly buckling--But just as I thought it was about to collapse, a pair of hands shot out from the darkness. The shadow-figure reached around Ella's body to grab her chest, taking some of her weight off the poor piece of furniture.

In the midst of the perverted chaos, I was struck by a small detail: the size of the hands groping my sister through her thin shirt. They were small and slender, barely able to cup my sister's small breasts. I'd never seen a man with petite fingers like that--And as it turned out, I still hadn't.

With rising horror, I recognized the piece of metal and gemstone that was glinting on the stranger's finger. It was my mother's wedding ring. Our mother's ring.

It was at that moment that the table gave way, collapsing in on itself with a sickening creak. But Ella rose above it, lifted into the air by strong arms--_Impossibly _strong. But that was the last thing on my mind as their owner stepped into the light.

It was her, alright: Lily Shaw, content housewife, mother of two... And yet, it wasn't. As my wide eyes moved up and down her naked, sweating body, they could only notice the differences.

A toned waist, missing the belly she'd had before--As far as I could tell, anyway, with my sister's bouncing body in the way. Flowing, voluminous hair, like a girl in a shampoo commercial. Long, toned limbs, strong enough to lift Ella yet distinctly feminine... And was she a few inches taller? Maybe more? She certainly seemed more... Powerful... Not least because of the look in her eyes. They blazed like fire, just as red and twice as hot. I could've sworn they were glowing, but that was probably a trick of the light that hung just above them.

My gaze soon moved on from her grinning face, though, and locked onto the truly incredible part of the scene: the massive cock driving into my sister's asshole.

I didn't react, didn't move, didn't think as I watched Ella's poor body get thrown up and down on that shaft. Mom was using her like a sex toy, burying her impossible member to the hilt at a breakneck pace. My sister's tongue was lolling out, her eyes rolled back, and her hands flailed aimlessly... The perfect picture of a happily-broken slut.

With the creaky table lying in a dormant heap, I began to hear a new sound... The slap, slap, slap of my mother's bouncing testicles slamming against her daughter's ass. Hey were huge, in fitting proportion with her 12-inch cock--Bigger, maybe. My dry eyes twitched as I continued staring, and the grapefruit-sized ballsack twitched right back.

I blinked, and when my eyes opened again, Mom was staring right back. Twin fires burned into me--I swear I could feel the heat on my skin.

That was all I could handle. I turned, ran further into the house, and... And...

...Actually, I'm not sure what happened next. I must have fallen asleep at some point... All I remember is waking up late the next morning, soaked with sweat.