Happy Birthday, baby! You will LOVE my present to you! This present will make all your dreams and fantasies come true! See this key? The chastity device on you is associated with magic, it has very special powers. You’ve wanted to watch me fuck someone, right? Tonight, it’s happening! This chastity device will take all your sexual energy and feed it to me and my partner, we’ll both have the most powerful orgasm EVER!

But that’s not all. Every time I fuck someone else, you’re going to change. You’ll shrink in size, just a little bit as all of your energy drains into me and my lover’...

Happy Birthday, baby! You will LOVE my present to you! This present will make all your dreams and fantasies come true! See this key? The chastity device on you is associated with magic, it has very special powers. You’ve wanted to watch me fuck someone, right? Tonight, it’s happening! This chastity device will take all your sexual energy and feed it to me and my partner, we’ll both have the most powerful orgasm EVER!

But that’s not all. Every time I fuck someone else, you’re going to change. You’ll shrink in size, just a little bit as all of your energy drains into me and my lover’s orgasm. This will be so amazing! This will be really fun!

Hmmm. I think that friend of yours from high school would be the best. Or your best friend! He seems like he could really fuck good and hard and... Well anyway, after the first time there’s no going back. You know why, right? The key won’t fit once you shrink. Even just the littlest bit of shrinking is enough for that key to not fit.

This is the best gift ever! Right?!

You’re going to enjoy your new life, hmm. All that energy just blasting into me and my partner, making it the best sex EVER! You’re so lucky, you know that? Isn’t it fantastic? You’d get smaller and couldn’t leave the house... All that energy continues to power me up with sexual pleasure! The smaller you get, the more powerful my orgasms will be!

And of course, HIS orgasms too, all those hot studs pumping me full How do you feel about that? Good, right? What a great girlfriend I am to give you such a delicious gift! I can’t wait until you’re so small, watching me make love to all your friends... and you continue to get smaller... and smaller... watching every bit of it.

And if you’re extra good, I’d even let you taste all that’s left from those hunks... all those powerful ejaculations, yum! You could live on that, begging me to find new partners so you could live longer on their spunk and continue to live... just so you could watch me fucking and having wild orgasms! Just imagine, you’d get so small... You could fit in a cute jar on the table!

This will be delightful! Happy Birthday!