Her oversized penis pointing the way, Violet went downstairs and hung a left into the kitchen, where Kathleen was at the sink facing away from the doorway. Violet snuck up behind her and wrapped her arms around Kath’s midsection, causing her to start. Before she could say anything, Vi’s hands wandered up to clasp both of Kathleen’s boobs, while her teeth nibbled at an earlobe.
“You know,” Violet said in a breathy voice, “I should really make sure that everything is alright in there. I’ve got the perfect tool to do it, too…”
Licking her lips, Kath used her ass to rub up and down against Violet’s cock, which was already hard as a rock. She was right, too; it was the perfect too for the job.
Kathleen sighed and closed her eyes, enjoying every moment. She felt one hand leave her breast and move down to unfasten her shorts, causing them to drop to the linoleum. She immediately felt the hot tip of a penis against her bare ass-cheek, throbbing with the rhythm of Violet’s heart. So, she didn’t disappoint.
Bending over and arching her back, Kath glanced behind her shoulder with hooded eyes and quicker breaths, seeing her move towards her damp entrance. She felt the head of the cock penetrate her slowly; feeling every vein in the pulsing member as it pushed its way into her vagina. Violet sighed the entire time she pushed into her sister, but stopped at about halfway before she had a chance to bottom out. No need to make Kathleen uncomfortable.
They settled into a rhythm, Kath supporting herself on the sink, while Violet used the ass in front of her as a pair of handholds as she thrust clumsily into her sister’s pussy, which was now leaving streaks of cum on the length. Kath was groaning with every movement, feeling warmth fill her abdomen as the muscles worked. After a couple minutes of enjoying the ride, Kath decided to get a little crazy. She pulled almost all the way off of Vi’s dick, feeling the head sitting just inside her entrance, and then she rocked back, intending to get as much inside her as possible.
To the surprised of both girls, Violet’s member didn’t bottom out after six or seven inches like what happened earlier that day, but thanks to Kathleen’s thrust, every single inch of cock disappeared up inside of her until Kathleen’s ass came up hard against Violet’s stomach. They both lost balance, falling against the island in the middle of the kitchen; Kathleen shocked to feel the pulsing head of Violet’s unnaturally long cock just below her sternum, in a place where it shouldn’t be. There was no pain, it merely felt as though her vagina was more than twice as lengthy, able to accommodate the monster that was completely filling her up.
Violet was stunned to see her cock disappear into her sister completely, ramming it securely into her body cavity as Vi’s back caught up against the island. They both stood there, joined by the genitals, panting in mutual disbelief.
“Kath, did I hurt you?” Violet asked, although she had heard no cries of pain.
“No, it’s incredibly hot.” She turned enough to look Violet in the eye, “This is what the book must have done; changed my insides so that I could take your cock!”
Violet flexed her member inside her sister, causing Kath to gasp and squeak. “Apparently so. You’re sure you’re alright?”
Kathleen nodded, and stepped forward, allowing the cock to slide out of her with a wet squelching noise. She hopped up on the counter, which turned out to be the perfect height for Violet to fuck her. They locked eyes with equal intent. Violet stepped closer, and plunged into Kathleen her entire length, causing her to squeeze her eyes shut and groan tremulously.
They fucked hard for five whole minutes, Violet utilizing her entire length to give Kathleen two incredible orgasms that left her shaking and screaming on the counter. After the second orgasm that her sister panted her way through, Violet couldn’t take it anymore. She yanked her cock out of her sister’s snatch, pulled her onto the linoleum floor, and grunted as Kathleen leaned forward and took the head of her cock in her mouth, allowing every drop of semen to flow down her throat.
Violet let out the breath she had held during her orgasm, and watched as Kath milked the last of the cum out of her cock with a hunger.
They both stumbled into the sitting room and collapsed into chairs, panting and sighing after their mutual release. All they could do was stare at one another as Violet’s cock shrank back to its flaccid state and Kathleen’s newly lengthened vagina collapsed back to ‘normal’ after being stretched to such extremes.
Finally Kath found enough will to speak.
“Sis, I don’t know what was written in those books, but they made some amazing things happen. I’m really enjoying this.”
Violet nodded in agreement, for despite the shock of the experience that both girls had, the outcome was extremely hot and entertaining. It was going to be an interesting week.
Kath pushed herself up so that she was sitting forward in the chair. “Vi, when I went uptown to get that Plan B, I also got birth control. I started taking it, so in a week, maybe less, you can cum inside me again. It was so incredibly hot that it needs to happen again.”
Violet agreed, getting to her feet shakily. “Oh, it’s totally going to happen again.”
They both grinned at each other. Violet gently took Kath by the elbows and helped her to her feet. There they exchanged a passionate kiss, exploring each other’s mouths to the best of their ability, their hands roaming their bodies. When they came apart, it was with reluctance, and they were almost ready to go at each other again.
They both left the room, going off to complete their respective chores.
The clock on Violet’s bedside read 3:49 a.m.
She was sleeping on her back, snoring lightly, with one arm stretched above her head. The curtains at her open window bristled and wafted; thunder sounded in the distance.
The room was very dark, as the cloud cover allowed no light from the moon inside. In the darkness, Violet’s door swung open soundlessly, allowing entrance to a single lithe figure that paced deliberately over to the side of Violet’s bed. There the figure stood, staring down at the girl.
Violet stopped snoring, and opened her eyes, but showed no expression or surprise at the figure standing at her side. Her eyes were seemingly sightless, focusing on nothing and no one. As if in a daze, she moved the covers off of her body, and began to slowly stroke her cock, which began to harden immediately. The slender figure beside Violet’s bed moved a hand into her crotch and moved it in circles, soon creating a wet sound that was unmistakable.
Lightning lit up the room for a split second, revealing Kathleen’s face vacant of all emotion as she climbed onto Violet’s bed. Both girls made no sound and said no words as Violet held her fully hard dick in a vertical position, and Kathleen slid onto it, taking the entire length into her body cavity. Thunder crashed, closer than before, but neither girl made a sound; Kathleen simply sat on top of her sister, the monster penis fully imbedded within her.
If Violet were in a state where she could process her senses, she would have felt Kathleen’s vaginal muscles flexing hard, and separately. With Vi’s cock sunk deep, the flexing began at the entrance of Kathleen’s pussy, at the base of Violet’s dick, and progressively moved deeper until the muscles clasped the head of her cock, and then it would begin again. Neither girl moved or spoke, as though they weren’t in control of their actions.
This happened about a dozen times before Violet’s breathing began to deepen and quicken, followed a few seconds later by an unconscious thrusting of her hips as Kathleen’s rhythmic vaginal pulses caused Violet to ejaculate deep within Kath’s body.
With one coordinated movement, the girls held each other and reversed positions so that Kathleen was laying back on the bed and Violet was in between her legs. During this action, Violet’s cock remained deep inside of Kathleen. Violet bent over her sister, neither one of them seeing the other, and thrust hard, the head of her cock barely caressing the bottom of Kath’s vagina. Three more times she thrusted, depositing every drop possible into Kathleen, and at the same time pushing the semen as far in as possible, so that it would pool at Kathleen’s cervix and eventually drip into her uterus.
Violet mechanically pulled out of Kathleen with a sucking noise; not a single drop of cum flowed from the opening. Vi stood up beside the bed, and left Kathleen in her room, closing the door behind her. Going into her sister’s room, Violet crawled into the bed and promptly closed her dull eyes, her cock still slick with Kathleen’s juices.
Lightning flashed far away, answered by a low peal of thunder, as the digital clock on Kathleen’s bedside table illuminated Violet’s sleeping face. It read 3:58.
Author’s note: This storyline has developed far beyond what I had initially planned. Any suggestions for what you want to happen to Kathleen and Violet Casey next will be accepted and considered. Thank you and I hope you enjoyed this third installment!
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