"At least let me undo her bra."

The next day’s a bit quieter.

Meg has class in the morning. Advanced Occult History with Professor Susan Smart, a sophisticated raven-haired Englishwoman in her late thirties who seems to know absolutely everything there is to know about historical magic and demonology. A stern, no-nonsense, voluptuous woman with full breasts straining against her severe white blouse, she strikes you as an obvious prank target, but Meg quietly vetoes all of your ideas.

“Come on. At least let me undo her bra.”

“Not right now,” Meg scolds. She’s sitting in the middle row of the lecture theater, next to her friend Beth, surrounded by students on all sides, listening carefully as Susan presents a case study on witchcraft in colonial New England. “This is really interesting! I don’t want to distract her.”

“Well, I have to undo someone’s bra.”

“That’s what Beth is for.”

Beth didn’t overhear this conversation, because of your magic, so she’s surprised and confused when her bra comes unfastened beneath her tight white sweater. She can’t do it back up in the middle of class. You eye the discomfort on her face and the subtle shift of her tits under wool, and say “I have another idea.”

“Leave Susan alone!”

“Trust me. It won’t ruin the lecture, and it will be really funny.”

“Well, what is it?”

“Arabella Pynchplum, the famous Witch of Waxford, often considered the founder of this very college…” Susan is explaining as you whisper your evil plan into Meg’s ear. Despite herself, a slow smile begins to form on the tomboy’s face.

“So? Can I do it?”

“Okay, fine. But don’t take it any further! Let’s try being a bit more subtle today.”

You dart invisibly down to the stage of the lecture theater, and float around behind Susan a bit, checking out her ass. She’s wearing a tight gray pencil skirt over stockings and high heels, clinging to a deliciously full round posterior that, to your trained eye, is practically begging to be spanked. The perfect kind of ass for what you have in mind.

Underneath her skirt, as you see with your X-ray vision, she’s wearing austere black satin panties with just the faintest hint of lace trimming. Good enough for your purposes. You whisper an ancient and mystical word of power.

Almost nothing seems to change.

But Professor Susan Smart’s satin panties are now infinitesimally smaller.

Another second passes, and they shrink again, by a microscopic amount. You drift back to your seat, your job well done.

“Did you do it?”

“Oh, yes,” you say to Meg.

“I can’t see anything different.”

“That’s the idea. She won’t notice anything for at least five minutes. In half an hour or so she’ll be squirming. By the end of the lecture…”

“Ooh.” Meg shudders. “Wouldn’t like to be her.”

“It’ll be pretty funny watching her squirm. Hey, you want me to invisibly eat your pussy while you sit here?”

“Hmm. No, I don’t think so. You’re amazing at eating pussy, but someone might see me cum, and that could be pretty embarrassing.”

“Fair enough. You want me to eat Beth’s pussy?”

“Haha! Yes!”