Big Tits Theory
Copyright© 2019 by Pan
Chapter 2
Incest Sex Story: Chapter 2 - Marty tells his sister about a theory he has - the "Big Tits Theory" - while feeding her body-altering, mind-bending milkshakes.
Caution: This Incest Sex Story contains strong sexual content, including mt/ft Ma/ft Teenagers Hypnosis Magic Mind Control Heterosexual Fiction Incest Brother Sister Anal Sex Exhibitionism Masturbation Oral Sex Pregnancy Sex Toys Tit-Fucking Voyeurism Big Breasts Body Modification Doctor/Nurse Public Sex Teacher/Student Transformation
Tuesday:
“Oh my god!” I said, for the second time that morning. “This milkshake is amazing!”
“Thanks,” Marty replied with a grin. “I’m trying some new stuff. Can you taste the cinnamon?”
I nodded, even though I couldn’t. It all blended together in a perfect combination of tastes - there could have been cinnamon in there, but I’d never have picked it out from the blend of everything else.
My nod caused an unfamiliar sensation on my chest, but I tried not to focus on it as I sipped Marty’s latest amazing concoction.
That morning, when I’d woken up, my nipples had been strangely sensitive. They weren’t sore, exactly, but there was something strange. It wasn’t until I looked in the mirror that my eyes had boggled, and I’d sworn in shock.
Somehow, overnight ... my boobs had grown.
I reached up and pinched them - not only had they grown, but for the first time, I understood why women let men suck on them! I wasn’t rolling around on the floor with pleasure or anything like that, but the right sensations, the right touch ... I could totally see myself getting off on this.
Getting off ... my eyes widened as it dawned on me what this meant. I was ... well, I couldn’t tell, not without measuring, but ... I was pretty sure that I was a B-cup! And according to my brother’s theory, that meant ... I looked around to make sure that no one was watching - a strange thing for a teenage girl to do, alone in her room, but I was exploring new territory. The door was closed, and so I lay down in my bed, shut my eyes, and imagined one of the singers from my favourite boy-band standing over me, smiling, taking his top off for me ... To my delight, my vagina glistened, and my fingers naturally began stroking up and down my sensitive pussy-lips, instinctively discovering what I liked, what felt good ... I was - I was masturbating.
And I loved it!!
But before I could get too far into my fantasy, there was a knock on my door, and my eyes opened in shock as I was instantly teleported from the land of sexy male musicians touching my private areas...
“Sis?”
It was Marty.
“Sis, are you up? I’ve got a milkshake waiting for you!”
Reluctantly, I got up, put a top on, and joined Marty in the kitchen. Self-exploration would have to wait until later.
After the most delicious milkshake I’d ever had in my life, I went back upstairs. I found myself just staring at my tits in the mirror - they were no more than a handful, at most, but I’d heard boys saying that anything larger was just a waste ... and I certainly wasn’t complaining. I couldn’t believe I had tits!
I was even tempted to skip school, just to spend the day exploring the new sexual feelings coursing through my body, but I knew it wasn’t worth it, and so quickly got dressed and left for school.
When I arrived, something else hit me - I was a B-cup girl, which meant that if I found someone I liked, and we dated for a while ... we could have sex. And it would be good!
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