Use the app on Rachel

As much as I would love to fuck mom's pussy for the rest of the day, I can fuck mom whenever I want now that she's my sex ****. But I can't make my fantasy of having sex with my sister and turning her into my sex **** a reality if I don't do anything to make it happen. "I'll fuck you again later, Mom. I promise. Tell me. Do you remember that very important tradition I reminded you about before I fucked you?"

"Yes, Master. The tradition is that a mother will become her son's sex **** when he turns 18. I truly am sorry for not becoming your sex **** when you turned 18, Master. Please forgive me."

"Don't worry, Mom. I forgive you. But do you also remember that there's another part of the tradition that when a teenage boy turns 18, and he has a sister who is 18 or older, the sister will become her brother's sex **** as well?" Mom looks at me with a shocked expression on her face. "Oh my god! You're right, Master! I can't believe I forgot about that part of the tradition. It seems like I'm not the only one who didn't follow the tradition. We need to fix this right away, Master. It's very important that we follow the tradition."

"That's right, Mom. Come on. Let's go talk to Rachel." I grab my phone and am just about to open the door to leave the bedroom, but I'm stopped by the sound of my mom's voice. "Hey, Master. What is the tradition a family must follow if the parents don't have a son or if they have two sons? I don't remember."

"Oh! Uhh... If a family doesn't have a son, then the daughter will become the mom's sex **** when the daughter turns 18. If the family has two sons, then the mom will become the oldest son's sex **** when he turns 18. It is the older son's responsibility to impregnate his mom with a girl so she will become the younger son's sex **** when she turns 18." I'm impressed that I was able to come up with that so quickly. I really do have a perverted mind. "Oh, yes. That's right. Now I remember. Thank you, Master. Now let's go talk with your sister." Before I walk out of the bedroom, I think, "Not hard," and my cock goes soft. As I make my way downstairs with mom right behind me, both of us still completely naked, I bring my sister up on the app and see what information the app tells me.

Rachel Doe

Age: 20

Status: Single

Number Of People Had Sex With: 0, virgin

Breasts Size: C

Loves having her ass spanked. (Doesn't know it yet)

I'm honestly shocked to see that Rachel is a virgin. I thought for sure she wouldn't be given how much she loves showing her ass to people. But the thing that catches my attention the most is the app saying that Rachel loves having her ass spanked but doesn't know it yet. Interesting.

Now that mom and I are downstairs, I quickly peek my head inside the living room to see Rachel sitting on the couch, still watching TV. I gently push mom inside the kitchen and tell her, "Give me a minute or two to think about how I want us to remain Rachel about the tradition." Mom just smiles and nods her head at me.

I think for a moment about what exactly I want to type into the app. After thinking for a bit, I pull up dad on the app and type, James will see nothing wrong with seeing his wife, Mary, his daughter, Rachel, or his son, John, completely naked. James will see nothing wrong with seeing his wife, Mary, his daughter, Rachel, or his son, John, having sex with each other. James will believe everything his son, John, tells him, no matter what it is. I tap enter on the app. Now, I don't have to worry if dad comes out of his office and sees us.

I pull Rachel back up on the app and type, Rachel doesn't like wearing clothes while she's home. Rachel prefers to be completely naked while she's home. Rachel doesn't have any problem with her brother, John, or her mom, Mary, looking at her naked body. Rachel loves it when her family stares at her naked body. Rachel doesn't have any problem with seeing her brother, John, or her mom, Mary, completely naked. Rachel will become extremely horny whenever she sees her brother, John, or her mom, Mary, completely naked. Rachel will believe everything her brother, John, or her mom, Mary, tells her, no matter what it is. Rachel will believe that her brother's cock is bigger than it actually is. I don't tap enter just yet. "Hey, Mom. Do you think Rachel has a sexy body? Be honest with me."

"I do think your sister has a sexy body, Master. She doesn't have big titties like me. But I am jealous of her ass. I wish my ass was as big as hers." I didn't know mom was jealous of Rachel's ass. Maybe I'll increase the size of mom's ass to be the same size as Rachel's later. "Don't worry, Mom. You still have a big, round ass. Anyway, I know a massive slut like you would love to see your own daughter completely naked, right? You're getting very horny from thinking about Rachel being completely naked."

"Yes, I am, Master. The thought of seeing my own daughter completely naked is making me so fucking horny." Mom brings her right hand down toward her pussy and starts playing with herself. "And you wouldn't be bothered or see any problem if you found out that your daughter is a slut, right, Mom? A massive slut like you would be very happy to see that your own daughter is a slut. You want Rachel to be a slut, Mom." Mom is rubbing her pussy even faster now. "Yes. I want Rachel to be a slut. I would be very proud of her if she was a slut." I tap enter on the app, grab mom's left hand and lead her toward the living room.