I walk in the front door from school and shoot you a dirty look. You can tell I'm not happy to see you. You ask me why I'm dressed so stupid and I am super sassy and tell you that I just got out of gym class. I say that I'm going to my room upstairs and I want to be left alone! You check my ass out as I walk away and I catch you staring. I yell at you for looking at my ass and tell you you're gross, you're my brother!! Before closing the door I shoot you a look with a little smirk on my face. You take that as a sign that I don't really want to be left alone. You come into my room where I continue being a brat towards you, acting really annoyed and impatient. I start mocking you for always picking on me and tell you that I saw you checking me out. I know you're a perv and that you're into me. Today isn't the first time I have caught you staring at my ass. I keep making fun of you and tease you with my gym shorts until I notice that you have a boner. I laugh at you, its so embarrassing that you're hard for your sister!! You're disgusting! It looks really big though. What the hell? I would have never guessed you had a big cock? My brother is... hung?! Ew! But I'm dying to see it. I ask you to show it to me. I'm just curious!! You take out your cock and I'm shocked. And also impressed.. good for you bro. I had no idea! You're such a twerp to me I just assumed you didn't have much going on. Then I offer to suck your dick. Just so you can see what its like!! Nothing weird. I know you haven't been with a girl before. Plus... it looks really nice so it's fun for me too. I playfully suck your cock while I laugh about how weird this is. I tell you that I know you've always had the hots for me... why don't I let you see my tits just this once? I get more and more turned on and start to tease your cock against my ass in my shorts. I tell you that we should fuck, you're such a perv anyways for getting hard for your sister.. might as well see what it's like to put your cock inside of her. Maybe just for a second? You aren't sure and feel a little weird about this. I tease you until you finally agree. I slowly take off my shorts and tease your cock with my pussy and asshole until your cock starts to slip just inside of my pussy lips and... I'm so wet!! Oh my god. I can't believe my brother is making me wet like this, what the hell!! I gently edge your cock inside of me and start to ride you in reverse cowgirl. I keep poking fun at you here and there for being a pervert, but it's obvious I'm the perverted one. I love fucking you. I ride you in cowgirl and then tell you that you can't cum inside of me, that would be weird. But I want you to cum all over my ass. I turn back around and bounce my ass on your cock until I start to feel your dick swelling up inside of me. It feels so fucking good I know that you're about to cum but I can't take you out yet! You start to cum inside of me and I begin to berate you for not listening to me! But it feels sooo good, I don't even care. I ask you if you want to see your big load of cum dripping out of your sisters pussy... I can't believe you came inside of your sister just now!! I play with the cum and finger myself to get it all out. It's obvious I loved getting creampied by you....ew!! Get out of my room bro! tags: big ass, twerk, cum play, tattoos, tattooed girl, redhead, ginger, cream pie, cum in pussy, siblings role-play, step-sister, stepsister, sister brother, bratty, brat, mean girls, bullying, POV sex, fat ass, ass bouncing, taboo fantasy