I walk in and catch you wanking, but I feel like my tits have swollen up just by looking at your cock! You know what they say about expander implants, right? They get bigger every time your skin touches cum. And since you're the only guy around here, even though you're my Brother, I guess you'll just have to help me. I want my skin to stretch and my tits to grow MASSIVE! So lets start by getting them around your cock Brother,r I want you to cum all over my tits and make them expand!!! They are already so huge and firm and I can't wait to transform them even more!!! You cum for me and my tits grow larger, but I think we can get them up to a 3000CC, right Bro? I jump on top of your cock and demand that you fuck your Sister hard. Give me all of your cum and make my tits expand!!