*Features: breast expansion role play and dirty talk; teasing with cleavage in my sundress; full nudity; cumming using just my fingers*

You arrive home from work to find your girlfriend going through her favorite book of pin-up art. Kayla is excited to see you and explain to you that she's spent the last hour looking enviously at all of the perfect, big boobs on display in this book! Kayla loves her current big boob job but sometimes....when she looks through this book and sees boobs even bigger than her own...sometimes she wants more! The two of you have had this conversation before. You love watching Kayla get so excited while she thinks and talks about her boobs growing and expanding. You love to watch your girlfriend get visibly turned on as she describes in detail to you just how big she wants her tits to be one day! Sure, maybe it's all just fantasy and dirty talk but it's a fantasy that the two of you love to encourage each other in! Kayla starts dirty talking and playing with her tits, driving you wild while you stare at her cleavage! Kayla pushes her already big boobs into your face while she talks about titty fucking you with even bigger boobs! She tells you that lately it feels like her boobs really have grown. Her clothes seem to be tighter around the bust area. And her boobs...Kayla thinks they feel so tight and swollen right now, as though her tits could pop at any moment! You get caught up in the fantasy as Kayla plots out her next visit to the boob doctor. You love imagining just how big the doctor would pump up Kayla's boobs if he were given complete control of the final size! Kayla can tell that you are really needing to stroke your cock and cum so she starts fantasizing about an even better idea. What if you were in control of her boob size? What if every time your balls swelled up with cum, you made Kayla's tits swell!? What if the size of your load of cum determined her boob size!? Kayla wants you to pump your cock hard and fast. Pump up those balls and her tits at the same time! Show your girlfriend just how big you want her tits to be by getting your cock as hard, big, and full of cum as it's ever been! Watch your girlfriend finger fuck her wet pussy as she moans for you to make her boobs grow with more and more of your cum!