Sister Become Bimbofied

Kate is amazed by how empty the highway is. She's barely seen any cars since she got on. If she had looked to see the people driving the automobiles she passed, she would have noticed that they were all women with blonde hair.

She's on her way home and is planning to stay until her next semester of college starts. And with how fast she's currently driving, she'll be home in a few more minutes. It's been months since she's seen her mom and her younger brother, Josh. She hasn't heard from her mother in over four months, which is strange since she's always at least called or texted her once a week since she went away.

Kate has talked to her brother a few times over the phone. But whenever she asked if she could talk to mom, Josh always told her she was busy. Kate can't help but feel that he's hiding something. She remembers hearing what sounded like moaning during one of their phone calls. And Josh was super happy when she told him she was coming home. Kate doesn't know what her brother might be hiding. But the concern is the last thing on her mind as she parks in the driveway of her house.

After shutting her car door, she walks toward the front door. But before she can reach the steps, Kate is sprayed on the back of her head by what she assumes is cold water. She quickly steps to the side and turns around. But whoever is sprinkling her follows her head, and the liquid hits her directly in her face. "Hey! Stop that," Kate says as she blocks her face with her arm.

"Oh! I'm, like, so sorry. I, like, didn't see you," a woman's voice says.

As the cold liquid stop hitting Kate, she thinks she recognizes the voice. And after moving her arm away from her face, her suspicion is proven right. "Mrs. Robinson?"

"Like, oh my god! Katy! It's like, so good to see you again. Like, how long has it been since I, like, last saw you? Like..." Mrs. Robinson stops talking and drops the hose she was holding to try and count on her fingers.

Strangely, despite seeing Mrs. Robinson standing outside naked, Kate doesn't see anything wrong with this. She's more concerned about how different her neighbor looks from the last time she saw her. I remember her hair was black, not blonde. Why is she talking so weirdly? And have her breasts... I mean. Have her big bouncing titties always been that massive? I've known Mrs. Robinson since I was little. How have I never noticed how sexy she is until now? Kate thinks to herself.

She has never found herself sexually attracted to women before. But looking at her neighbor's breasts is making Kate think lewd thoughts. She starts developing a strange urge to take off her shirt. Her top and bra are beginning to feel uncomfortable. Without thinking, she quickly takes off the two articles of clothing and tosses them to the side. Mrs. Robinson is still too busy trying to remember how to count that she doesn't notice that Kate is now topless.

The young college-aged girl lets out a soft moan as she squeezes her breasts. She's unaware that they have gotten bigger. As Kate moves her eyes further down Mrs. Robinson's body, she notices her pregnant belly. From seeing this, Kate closes her eyes and imagines her neighbor having sex, but not with her husband. For some reason, she pictures Mrs. Robinson having sex with her brother, Josh.

"Like, it's been two months since I, like, last saw you, right?" Mrs. Robinson asks. When Kate opens her eyes, she sees Mrs. Robinson holding up nine fingers on her hands.

"No. I've been gone for four months. Also, you're holding up seven fingers, not two," Kate says as she continues playing with her breasts. She doesn't realize she made a simple math mistake.

"I see you have, like, learned a lot in college. You're, like, so smart." Mrs. Robinson says as she puts her arms down to her sides. She finally notices Kate is topless. "Like, oh my god! Your titties, like, have gotten so much bigger since I, like, last saw you, Katy."

Mrs. Robinson mimics the way Kate is playing with her breasts. The two stare lustfully at each other until a female voice says, "Like, honey. Are you, like, going to come back inside soon? I'm like, so fucking horny."

The two women turn toward where the voice came from and see a naked pregnant woman with blonde hair and big tits approaching them. Kate doesn't know who she is. But the woman seems to recognize her as she stands next to Mrs. Robinson.

"Like, Katy. It's like, so good to see you again. Like, I don't know if you remember me. I, like, changed my hair since we, like, last met." The woman says as she slides her hand down toward Mrs. Robinson's pussy.

Kate tries to remember who the woman might be. But she can't. I'm... Like, too horny to think. Playing with my titties, like, isn't enough. I, like, need more. She thinks, failing to realize that her mind is permanently changing. As she watches the woman play with Mrs. Robinson's pussy, she gets an idea. She lets go of her breasts and quickly removes her pants and panties. Feeling relieved to be naked, Kate starts vigorously rubbing her pussy. Oh, fuck! This, like, feels so fucking good!

Playing with her pussy satisfies Kate's horniness long enough for her to think again. Looking at the woman's face again, she finally knows who she is. "Like, oh my god! Mr. Robinson! I'm like, so sorry. I, like, almost didn't recognize you."

"Mr. Robinson?" The woman says, confused. "Like, don't you remember my name, Katy? It's Michelle."

"Oh! I'm, like, so sorry again. I, like, thought your name was Michael."

"It's alright, Katy," Michelle says. "Like, what are you doing here? I like, thought you went away for college."

"I did. But I, like, returned home to, like, see my family before college started again." Kate quickly realizes something. "Oh! I'm like, so sorry. But I can't, like, stay and chat. I, like, told my brother I would be home by now. My mom must be worried, like, right now, wondering where I am. Can we, like, have fun later?"

"Like, sure, Katy. Also, like, don't worry about your mom. She's probably, like, thinking of other more important things in her, like, mind right now. Like, see you later, Katy. Oh! I, like, almost forgot to tell. Master, like, wanted me to tell you that he, like, left the door unlocked for you," Mrs. Robinson says before she and Michelle turn around and head toward their house.

Kate somehow knows the person her neighbor is referring to as Master is her brother. However, she doesn't understand what Mrs. Robinson meant by her mom thinking about other important things. Like, what is more important than knowing where your child is? She thinks to herself. But that thought quickly fades from Kate's mind as she stares at her neighbors' exposed asses as they walk away.

After Michelle and Mrs. Robinson disappear inside their home, Kate looks down and realizes she's still playing with herself. Her hand is soaked with her juices. Feeling that she's going to cum soon, Kate continues to play with herself as she makes her way toward the front door of her house. She notices her clothes lying on the ground. But she doesn't think to put them back on and walks right past them.

"Mom! Joshy! I'm like, home," Kate says as she enters her house. Instead of getting a warm welcome back from her family, she hears moaning from upstairs. She walks up the stairs, curious to see who's making that marvelous sound. After reaching the top of the stairs, she realizes the noise is coming from her brother's bedroom. There's a small mirror hanging on the hallway wall that Kate passes. Had she looked in the mirror, she would have seen the color of her hair is now blonde instead of brown.

The door to Josh's bedroom is opened ajar. Quietly, Kate peeks inside the room and becomes hornier by what she sees. Due to the bed being positioned on the other side of the room facing the door, she sees the back of a naked woman bouncing rapidly on Josh's cock.

"Welcome home, Kate. You can come in," Josh says. She doesn't know how her brother knew she was watching. Perhaps he heard her shout when she first entered the house and was waiting for her. Either way, she's been caught, and Josh said she could enter his room. And that's what Kate does.

Now having a better view, Kate becomes immensely horny as she finds the lucky woman riding her brother's cock is their mom, Meghan. Kate has discovered two new things about herself today. She's into women and ****. Like, why do people say **** is wrong? Like, how can anyone be disgusted by this arousing and beautiful sight? She thinks to herself. "Like, hi, Mom. It's, like, so good to see you again."

"I'm sorry, Kate," Josh says when Meghan doesn't respond. "But Mom ignores everything in her surroundings whenever she's riding my cock. You should've seen Mom giving me a blowjob and a tittyfuck at the same time earlier. I'll have Mom show you how skilled she is with her mouth and tits later. Right now, enjoy the show."

Kate doesn't say anything as she continues playing with herself while lustfully watching her mom. And she doesn't question the changes in her mother's appearance from the last time she saw her, like the blonde hair, her pregnant belly, or that her tits look so much bigger than she remembers. All those details turn her on. She desperately tries to make herself cum and feels like she will any second. But no matter how vigorously Kate rubs her pussy, she's unable to achieve an orgasm.

"Get ready to have your pussy filled with my cum, Mom," Josh says. Hearing her brother say this makes Kate jealous that he can cum, but she can't for some strange reason. But Kate's jealousy toward her brother quickly turns into jealousy toward her mom.

Like, Mom got to have lots of sex with Joshy while I was away at college. That's, like, not fair. I like, want to have fun too. Kate thinks to herself.

Shortly after Josh has finished cumming inside his mom, she has regained her mind. "Like, thank you so much for, like, cumming inside me, Master," Meghan says.

"You're welcome, Mom. Also, look who's here."

Meghan turns her head and finally realizes her daughter is in the room. "Like, oh my god! Katy! You're home! And I, like, see your titties have, like, finally fully developed."

"Like, thanks, Mom," Kate says as she squeezes her breasts. "It's like, so great to see you too. Like, watching you ride Joshy's cock has, like, made me so fucking horny. You looked like you were having lots of fun."

"I was," Meghan says as she hops off Josh's cock. "Master's cock is, like, amazing. Like, look at how much cum is, like, inside my pussy."

Kate develops an urge of wanting to lick her mother's pussy as she watches Josh's cum leak out of it. But then she notices her brother's still-hard cock. Josh smiles at his sister as she climbs on him without saying a word and slowly slides his cock inside her.

"Oh, fuck! This, like, feels so fucking good," Kate says as she cums from sliding Josh's cock fully inside her. And she already feels like she'll cum again as she starts bouncing. With each bounce Kate makes, she loses more of her original personality. She forgets everything she learned in college. And pretty soon, the only thing she'll be capable of thinking about is sex.

While Kate was away at college, her younger brother had plenty of time to create a better version of the bimbo potion that would affect the person by having the liquid make contact with the person's skin. After Josh figured out how to make lots of potions quickly, it wasn't long until the whole town was under his control.

If Kate's new corrupted mind could comprehend that the consequences of telling Josh she was coming home would result in her turning into a dumb, slutty bimbo, she would see her action as being the best mistake she has ever made. Had she returned home without saying anything, things might have gone differently. But after Mrs. Robinson sprayed her with the bimbo potion, Kate's fate was sealed. And there's nothing she can do to undo all the changes that have happened to her as Josh cums inside her pussy.

Kate's mind goes completely blank as she feels her brother's warm cum enters inside her. When it returns, she finally understands what Mrs. Robinson meant earlier. The only things a dumb, slutty bimbo like her should think of are sex and serving her Master. And Kate is happy with starting her new life as Master's bimbo as she begins bouncing on his cock again.

A/N: I hope you all enjoyed the chapter. The image was created by Caveman Doodles. I can't provide a link to where I found the image since I didn't find it online. The image, as well as the other two images from the previous chapter, are from a porn game I once played called Adventure High. I had to download the game to get the image.