[M4F] My Sister, the Cumdump

NSFW

You are my sister (I have a bit of a preference towards twins, but it is not a requirement, you can be younger or older if you so desire) and you are an absolute whore. You thought you had hidden this fact and maybe from mom and dad you had. But not from me. There was only so much you can hide, when we have shared an apartment our entire adult lives. Not to mention the number of my friends who had rearranged your guts and even gone on to tell me about, with a laugh and a high five from me in response. As if you were just any other sexual conquest, because of course, you were.

Now, none of this was to say we have a bad relationship, that I held any of this against you or anything of the sort. You're just a bit of a whore and that's ok. You are still my sister, and I still love you. Despite how many of my friends and countless other men have emptied their balls in your various holes through the years.

You did not know I knew any of this though. Not until tonight anyway. I had some friends over, playing video games in my room. You knew this and were going to come check in on us. To see if you could give one of my friends the not-so-subtle wink that meant you wanted to be railed. You still thought I didn't know about that either.

But you heard something coming from my room right before you opened the door. We were all talking about you, about how many of them had slept with you, all the naughty things you had gotten up to with them and more. But even more surprising, I was joining in, laughing along, encouraging them to use you like the cum dump I knew you to be.

All jokes stopped though when one of them piped up a particular question. "What about you Ollie? Think you'd dick down your sister? Become Eskimo brothers with all of us?"

There was scattered laughter at the question, but also an ere of tension about the room which even you could feel as all eyes turned to me.

I think to myself, then break out into a wide smile. "You know what? I think I would" I say with an unashamed chuckle. "She has lots of practice, all you guys seem to have had fun. Why not give it a go?" I say, as the room fills with roars of approval.

(Howdy, howdy!

Obviously, I have a not so realistic incest prompt in store for tonight! One where you play an absolutely shameless slut! One who has just learned that her brother not only knows but would be willing to fuck her just the same as any of his friends have.

But what does sister dearest do with this information? Does she keep it to herself? Letting the information naw at her for months on end? Does she address it with her brother the moment his friends are gone? Or does she barge in and take him up on his offer with spectators? The choice is yours to be sure!

Kinks: Cumplay, creampies, facials, lots of cum, incest, spanking, hair pulling, roughness, clothed sex, public sex, risky sex, voyeurism, anal, and plenty more!

Limits: Gore, feet, toilet play, animals, non con, torture

I hope to hear from you soon! I know we can have a load (or more ;) of fun with this idea!)

Posted Jan 14, 2026, 3:11 AM UTC

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