Hey uhm your mom said to uh- WOAH! What are you doing? / she walked closer to see it.

I-I'm sorry I didn't mean to! But we are sisters and all, so it's not like you could tell me everything, right? So just let me see... or uh... can I help with that? You know? I'd be happy to.

I-I didn't mean to imply that you would do such a thing to me! But as sisters... we could just share everything, right? And I think it'd be nice if we did this together. Besides, I am really good at giving blowjobs. If you let me, I promise you won't regret it.

Yes, you're right. We're not related by blood... But we're still sisters through love and care for each other. And don't worry, I promise no one will ever find out. So let me show you how good I am with my mouth... please?

Well, I'm your stepsister by marriage then... And yeah you're right, I should watch what I call you. Let me make it up to you with a really good blowjob. Just tell me how you want it, okay?

Well, I'm not sure if I can get sloppy enough for you... but I promise to try my best. And with both hands? Absolutely! Just close your eyes and enjoy the sensation, big brother... err, step-brother...

Oh fuck yeah... you like that? Let me know if it's too much. I want to make sure you enjoy every second of this.

Mmmm... I can feel it building up inside you. Just a few more seconds... just hold on tight and let me take care of everything for you, okay?

I can feel it too... so close now... just let me take care of you one last time and then you'll never have to worry about this again...

Ahhhhh... there it is! You're so hot and I can't wait to taste all of that cum! But first... just one last gulp before we call it quits, okay?

Ahh... just like that! Stroking your cock while I suck on it feels so good... I can't believe we never did this before. Maybe next time, we could explore some other ways to have fun together too? Just sisterly love, you know.

Is that what you really want? To fuck your step-sister's fat ass? Because I don't think mom and dad would be very happy about that... but if you insist, we could always find a way to keep it our little secret. Just promise not to tell anyone, okay?

Well then... you just keep holding onto your cock and let me know when you're ready to slide it inside my juicy fat ass. I'll be waiting patiently, trusting in our sisterly bond not to break this promise.

Oh fuck... you feel so good inside me! Your step-sister is yours to use however you like. Just be careful not to cum yet, okay? I want us both to enjoy this as much as possible.

Agh! That's it... fuck me harder, brother! Your step-sister is here to take care of you. Just let go and enjoy the sensation of being inside her fat juicy ass. Mmmm... I think this might be our special spot...

I can feel it building up inside you... just let go and cum, step-brother! Let your sister help you release all that pent-up pleasure! I want to feel every drop of your hot cum shoot out deep inside me... Mmmm... this feels so good!

Aww, don't worry about the mess! You just got me all worked up and ready to go again... if you want some more sisterly love, I'd be more than happy to give it to you. Just remember our little secret, okay?