A taste of her own medicine

You stew for a week or so, thinking about how you want to get your ****. The plan all seems to come to you at once when you find out that Ms. Victoria is going to be presenting her findings to a big chemistry conference in the school's auditorium on Friday. You have to move quickly. It's easy enough to intimidate one of Ms. Victoria's chem students into stealing a decent amount of the invisibility serum. It takes a little more to convince one of the drama techs to help you set it up, but after a few minutes of hanging out her second floor window by her My Little Pony panties is enough to get her to see your side.

Once everything is in place, all you have to do is wait. The day of the presentation comes, and you set yourself up in the back of the auditorium, remote control sitting in your hand. Hundreds of scientist file in, filling the auditorium to see what Ms. Victoria and her chemistry department has to offer. Once the room is full, the lights come down, and a spotlight illuminates Ms. Victoria. She steps across the stage dressed in one of her tight skirts, albeit a longer one than usual, and a black button down shirt.

She takes her time, making her way across the stage, allowing the room to anticipate her first words.

"Invisibility. Long though an impossible height, will soon join the moon, and instant worldwide communication as a hurdle of the past."

As she's talking, she moves back and forth across the stage, nearing the mark a few times, but never hitting it.

"With my new discovery, mankind has taken the next step in mental evolution." Suddenly, you see that she stands right on her mark, and you press the button. It takes a moment, but suddenly a viscous liquid drops from the ceiling, coating the young chemistry teacher. She lets out a scream, and stage hands immediately step in with whatever towels they can find, some of them paper. They attempt to dry her off, as the crowd murmurs to itself.

Once she has dried off and regained her composure, she steps up to address the audience once more. "I apologize for the delay. No harm done, however, so let's just carry on." She tries her best to be dignified, but all of that goes out the window, as her suit slowly becomes invisible. Beneath, a lacy black bra covers her shapely breasts, her nipples just barely visible through the fabric. A tiny, sheer black thong does very little to cover her bush. From the back it's hard to make out, but you think you see that she has shaved it into the shape of a heart.

"Now, as I was saying, invisibility is..." The crowd has lost focus completely, muttering to each other, some even getting a good laugh. "Look, I know we've had a distraction, but if we could rally get back to..." that's when she looks down and notices that she is essentially standing in her tiny, see through underwear in front of a room full of the most respected minds in her field. She quickly covers herself with her hands, spinning around to reveal her round, curvy ass sticking out the back of her hilariously small thong.

She goes to run off stage, but falls, landing on her face with her basically naked ass up in the air for all to see. She dives behind the curtain, as the crowd noise suddenly gets even louder. With a satisfied smile on your face, you slip out the back, and head to your next class, hoping Ms. Victoria has learned her lesson.