"For your transformation mom, you will absorb cum. For every bit of cum you soak up, you will store it in your tits, which will grow large enough to accommodate all the cum they can. Anyone can drink stored cum from your tits, but the more they do, the more they get addicted. Plus, drinking from your tits will make them grow tits that could hold as much as they drank. If there isn't any cum for someone to drink and they want to, they will crawl into your vagina and will add their breasts as a new set for you, meaning you store twice as much cum as you take in and so on. To ensure you will almost always be full, you'll be a big cum slut. I dare you to use the curse on me, then dare me to shoot all the cum the horse shot into me all over you."
It happened just like Jen said, and Jen shot a huge spray of cum on her mom. Her moms tits swelled as they took it all in, going all the way up to an MM cup. Her mother took her clothes off before going out back and rolling around, soaking up all the cum that the horse had made all day. Her moms tits ballooned up even more and soon touched the ground even when she walked.