Just sit and play it cool.

You sit up straight in your chair, hoping she doesn't notice you, or possibly doesn't remember. Your hopes are dashed when she gives you a long, knowing look. She turns her attention from you, doing little to calm your racing heart.

"Invisibility!" She says with a flourish, writing the word on the large whiteboard. "A long pursued concept that has lingered just out of mankind's reach. So far out of reach, in fact, that our literature still portrays it as a super power. Today, students, because of the diligent work of the scientists in HSU's very own chemistry department, we may be one step closer to making this super power a mundane part of reality for all humans."

It is only now that you notice the large, metal case she has set down on her desk. She turns her back to you to unclasp, and open it, removing a large, glass beaker full of yellow liquid. "Ladies and gentlemen, allow me to introduce to you the possible key to invisibility. In order to properly demonstrate, however, I will need a volunteer." These words make your heart sink into your stomach, as you know exactly what's coming next. Ms. Victoria points at you before anyone else can volunteer. "You! Come on up here. You look eager to advance the cause of modern science."

You don't see where you have much choice, so you stand up, and turn to face the class. It is only now that you realize how many people are actually in this class. A classroom almost big enough to be a small auditorium full of you peers, all of their eyes trained directly on you.

"Now!" Says Ms. Victoria, "In order for this serum to work, you must apply liberally to the subject." Suddenly, you feel a liquid pour over the top of your head, and run down your clothes. It's a sudden, unwelcome feeling, but she just continues pouring until the beaker is empty. She then rubs the liquid around so it fully coats you, before handing you a towel. "Once the subject has been thoroughly coated, instruct them to dry off, and then wait." You dry yourself off, regretting everything up until this point. You look back up at the classroom, and after a moment of two of them staring at you, you hear a wave of stifled giggles go through the room. You assume it's just a random bout of nervous laughter.

"Yes, and now you see the problem with our little invention. It doesn't seem to work on skin. Only cloth." You give her a confused look, before looking down at yourself. What you see next strikes you paralyzed with fear and embarrassment. Your outer layer of clothing seems to have disappeared entirely, leaving you in only your tiny AC/DC thong and lacy black bra in front of the entire class. You throw your arms over your perky tits, and the little triangle of cloth covering your shaved pussy, as the laughter grows louder, and people begin taking pictures. After a minute, you regain your composure, and run out of the classroom, giving them all a nice view of you backside. You run all the way back to your dorm room, only being seen by a few people. Throwing yourself on your bed, you silently vow to get **** on Ms. Victoria.