She makes him tiny and weak

James stood in the middle of the living room, naked and nervous. Being naked in front of a small, but hot girl should be a good thing, but her being fully clothed and clearly in control was messing with his head. He smiled nervously.

Michelle walked around him examining everything. Her eyes settled on his soft penis. "I know you're nervous, but it's a little hard to tell what I'm in for. Get hard for me."

James inhaled sharply as his cock inflated to full size in less than two seconds.

"No way!" said Michelle. "I meant for you to jerk off to get hard! You just did it! I guess... you know, the web post said that there was a curse on you and you'd do anything I told you, even change physically. Is that true?"

James shrugged. "I guess so. This is my first time pissing off a witch."

Michelle's smile went from impish to devilish. "I've always wanted to be bigger than someone in the bedroom. Enough to **** myself on him and have my way with him. Let's try something. Get smaller, like half a foot shorter than me.

For a split second, he wanted to laugh. A part of him still believed this was all a placebo effect, or at worst that the "witch" Rebecca had hypnotized him on their date and planted some suggestions. As the room started to move around him and he saw the ceiling getting farther away, he realized that this was all real. He shrank, going down to eye level with the very short, giggling woman in front of him. He shrank even more, finally stopping at a height that he hadn't been since his tenth birthday.

"Oh my god, you're so cute!" squealed Michelle. "You still look too manly, though. Too many muscles. Loose all the muscles. Get weaker than me, enough so that I can do whatever I want with you."

"What?! No!" he yelled as a strange sensation went through every muscle in his body. James looked down and watched years of work at the gym fade away. His arms shrank until they were spindly, and his legs were hardly any thicker. "What the fuck did you do to me?"

"Oh, don't act like that." The 4'10" girl took a step forward and looked down at James, towering over him. "Actually, feel free to act like that. I don't mind some resistance. Just remember that it's all an act. Being pushed around by a bigger, stronger woman is a huge turn on for you, and we both know it."

As she said it, it became true. James was suddenly overwhelmed with desire. He'd never had thoughts like these before, but now he was imaging Michelle throwing him on the ground and taking charge. His nudity in her clothed presence was still embarrassing, but it was also a huge turn on. He knew it shouldn't be, and he was ashamed of it, but women being physically stronger than him was now a big fetish for him.

Michelle grabbed his wrist, her grip objectively weak but much stronger than he could pull away from. She easily twisted his arm, making him spin around as she pulled his arm behind his back. Michelle reached around with her other hand and held his neck, pushing his chin up.

"Do you like this, little man?" asked Michelle sweetly

"Yes!" spat out James. "God, it's so embarrassing, and I wish you'd stop, but it feels really good!"

Michelle leaned in close to his ear and whispered, "That's a good, little bitch. I'm going to have fun with you!"