I come storming in, in a pair of VERY tight jeans and black crop top. I'm visibly upset and need to talk to you, my step-brother. I start off by complaining that I've gained weight, and I don't seem to be too happy about it. You obviously don't see the problem, until I sigh and roll my eyes, turning around to show where I've been gaining the weight. I smack my butt and it jiggles even through the jeans. This seems to remind me, and I point out that they barely even fit now, when they used to fit so good! I've come to you in particular because I remember your love for big bottom beauties, an...

I come storming in, in a pair of VERY tight jeans and black crop top. I'm visibly upset and need to talk to you, my step-brother. I start off by complaining that I've gained weight, and I don't seem to be too happy about it. You obviously don't see the problem, until I sigh and roll my eyes, turning around to show where I've been gaining the weight. I smack my butt and it jiggles even through the jeans. This seems to remind me, and I point out that they barely even fit now, when they used to fit so good! I've come to you in particular because I remember your love for big bottom beauties, and I suspect that you've been trying to make your fantasies come true. I proceed to accuse you of attempting to fatten my ass up! We both remember from before that I saw your computer full of big bouncing bottoms, jiggly tushies, spanked shaking asses, etc. I smack my ass a couple more times to emphasize my point, while I push you to admit it. You appear shocked, yet happy at the bigger size, and continue to deny that you had anything to do with it. I claim that I don't believe you, so I push my point further. I turn around and struggle to pull my pants down to just under my cheeks and it exposes a tiny g-string thong that rides low on my hips and seems to be stretched tight across. I grab the panties, resting my fists on my cheeks, and shake them, causing my ass to shake, while exclaiming that this pair of underwear used to fit! Now, they show booty-crack and cut into my sides. I bend over and complain louder, while shaking, grabbing, and smacking my ass. It's SO BIIIIIIIIIIIIIIIIIGGGGG and PHAT! You're enjoying the show, but still deny anything to do with it, before I finally I burst out laughing. "Gooooootttt yyyooooooouuuu!", I burst in excitement. I roll down the thong slightly and use the jeans that cup my cheeks to bounce them up and down. I even bounce my body up and down a bit, making the booty bounce even more. Throughout everything, I continue to jiggle and smack my ass. I go on to explain that as it turns out, a lot of people like my ass bigger like this. So, I snuck into your room and grabbed your Phat Booty Weight Gain Supplements, and have been taking them regularly to grow my bouncing bottom. All of the bulging bottom bouncing and action has riled you up, and I can see that you're getting hard, so I invite you to come closer. I encourage you to touch yourself, and also to reach out to touch my cheeks to jiggle them, while I continue to jiggle them myself. I even model off how hard it is to put jeans on, shaking and jumping them up my cheeks, before pulling them back down. I laugh and model off my chubby cheeks from all angles, while I make it bounce and jiggle all over the place. I get down on all fours to bend over and continue to jiggle my booty in your face, while teasing about how amazing my ass is. You continue to jerk furiously to it, while I tease you about this bigger bottom being all your fault! You had all that big bouncing booty content on your computer and then supplements I stole from you, made the result is this. I stand back up and let you give my cheeks a kiss, while I can't stop myself from jumping up and down, and using other methods to make it bounce. Mid-jiggle, you can't contain it anymore and nut to the view. I tease you for just nutting to my big bottom bouncing? I laugh and jump-jiggle my jeans back up and grab the Phat Booty Weight Gain Supplements to take with me. I leave to let you clean up, while thanking you for my new FAT ASS...