+long legs + more ass

All the adjustments were were starting to rile up Karis. Her cock already strained to escape the confines of her pants, a thick bead of gooey pre dribbling through the fabric. She sat now at the table, enraptured with her task and the perverse sight of her sister stretching, pussy fully exposed now. Whatever had caused her to do that she couldn't quite figure. She hadn't written anything specifically that would make her expose herself to this degree.

Subtly she jerked her cock under the table as she continued to twist her little sister's body...

+extremely long legs

It seemed only natural to continue to accentuate Lizzie's new best features...

-bubble butt +(gigantic bubble butt ass:1.4)

her ass literally bubbled out, raising her by several inches off the ground as she stretched in place, comically making the process more difficult as she literally rolled from side to side on the toned shelf rounding out her rear. The lower half of her stood out as an incredible impossibility now, a symbol of the perverse power Karis had and more than good enough of jerk-off material for her depraved mind.

"How's Luke? Heard you guys earlier, seems like fun." Lizzie said in that same near-monotone as she bent down, her legs to the sides, leaving the silhouette above her of the ridiculous bubble butt jostling around the wide expanse of her strong hips.

"ohhh... he's fine, I think he might be ready to go again... he looked fully fucked-out when I left him but he recovers pretty quick." Karis said in a sing-song as she gripped and slowly stroked her cock through the gooey wet fabric. Her lids fluttered, her cheeks flush as hot air rushed in and out of her parted lips. "He can really take a cock, that ass, its something else..." she said, not thinking about the one she was talking about but rather the swollen lumps sticky with sweat across from her.

She could see clearly that the teasing and exposure had been affecting Lizzie as much as it had her. Her pussy looked molten, sticky with juices, her clit prominent and visible...