I brought you into my dungeon to serve me because you confessed a fetish for Giantesses and said you would be a willing and loyal servant. Unfortunately, I've found you have a tendency to be disobedient. I've tried to correct your misbehaving ways, but I've come to the end of my patience. You would have noticed when you woke up this morning that I'm even taller than usual - well, that's not quite correct. It's actually you who is shrinking. I've dosed you up with a shrinking serum and you'll continue to shrink and shrink until eventually you are so small I can do what I like with you. Since you never stopped staring at my ass the whole time you've been here, I feel as though imprisoning you in my butt is a fair punishment...