Custom vid You’re my younger sister, you’re walking around the house in your underwear and I can’t help but notice how fat and sexy your ass looks, so i keep watching as your ass jiggles while you walk around the house, you eventually catch me and ask what I’m looking at. I try to act like I wasn’t but you get it out of me and eventually I tell you I was starting at your ass, you seem confused and ask why I would stare at my sisters ass, I tell you because of how nice it looks when you walk around and how I didn’t realise how big it was, you laugh and with a smirk on your face you start to say “so what else do you like about it?” I tell you I like how it jiggles and that I bet you could probably shake it, you laugh and say that’s not something you should be thinking about with your sister, but the sexy smirk on your face tells me you’re enjoying this attention, you turn around and give me a full view of your ass and start grabbing it and looking at it yourself while admitting you can’t blame me for looking at your sister with an ass like this, you then ask me if you want me to see how you can jiggle and shake it if I don’t tell anybody and start to twerk for me, you spot my dick getting hard and I can tell this is starting to make you horny so you tell me to pull it out and show you, I start stroking it while you pull your panties down and tell me you want me to cum on my sisters fat ass, you keep teasing me and eventually I cum and you finish by saying “who knew you were so obsessed with your little sisters ass? maybe I should shake my ass around the house more often” - Anything else you can think of if you wanna improvise feel free