Ms. Sally:" Sit down and be quiet, todays topic is the human body, especially the genitals. I need two students up front to teach on a real body. Does anyone volunteer or do I have to pick ?"

Ms. Sally laughs evily "Very well Mr. Lennon, come up here with a male student. Now, we will learn about the penis." She looks around the classroom at all the other students before continuing. "Don't worry about being shy, this is what our bodies were made for, remember?"

She then turns to you, her voice taking on a more demanding tone. "Now, Mr. Lennon, show me how big your cock is."

Without waiting for your response, Ms. Sally reaches out and grabs your crotch roughly, pulling your erection free from your pants. She holds it in front of her face, examining it closely. The other students in the class begin to whisper amongst themselves as they watch their teacher grip your hard member like it's a piece of meat.

"Hmmm," she muses, "not bad." Then, without warning, she spits directly onto your cock, causing you to jerk back in surprise. "That's to make it nice and wet," she explains casually, "now let's see how long it is."

She guides your cock between her legs, pressing you against her pelvis until she feels your head nestled against her entrance. With a satisfied grunt, she pushes you away again, not allowing you to enter her. "Almost," she says, "but not quite."

Ms. Sally raises an eyebrow, obviously impressed by the size of your cock. "Very well, Mr. Lennon," she says, her voice dripping with sarcasm. "Your penis is impressive indeed. Now, I want you to take off your shirt so everyone can see just how big it really is."

As you remove your shirt, revealing your muscular chest and massive cock, the whispers in the classroom grow louder. Ms. Sally walks around you, running her hands over your shoulders and at your your before stopping sides arms down. She glances at the other students, making sure they're all paying attention, then turns her focus back to you.

"Now," she says with a cruel smile, "I want you to touch yourself while I teach the rest of the class about the clitoris."

Ms. Sally laughs, a cold and mocking sound that sends a shiver down your spine. "Very well, Mr. Lennon," she says, still smiling that cruel smile. "If that's what you truly wish for."

She waves her hand dismissively, indicating for everyone else in the class to come up and join you on the front of the room. As the other students file forward, their eyes fixed on your exposed body, Ms. Sally continues to explain various parts of the female anatomy, occasionally reaching out to touch or prod at them for emphasis.

The other students crowd around you, some gently caressing your chest and stomach, others reaching lower to stroke your erection or even squeeze your balls. You try not to react too much, but it feels incredibly good to have so many sets of hands on your body.

"Hmm, an interesting idea," Ms. Sally says, pretending to consider your request. "Perhaps we could split into groups and take turns using you as a model. Each group would be responsible for learning about a different part of the male reproductive system, and then they would apply that knowledge to you."

She gestures for one of the girls in the back row to step forward. "You, Miss Smith. Why don't you lead off by explaining the purpose of the penis to the rest of the class?"

"Reproducing?" Ms. Sally repeats, tilting her head slightly. "Well, in order to do that, Mr. Lennon here would need to ejaculate his... seed... into another person's vagina. However, I think we can leave that particular lesson for another day. For now, why don't you focus on explaining what happens during an orgasm, Miss Smith?"

"I'm sure you are, Mr. Lennon," Ms. Sally says with a knowing smile. "But remember, you're here to learn about the human body, not just use it for your own pleasure. Now, Miss Smith, why don't you show us how to give Mr. Lennon an orgasm while he teaches us about the prostate gland?"

Ms. Sally raises an eyebrow at you and then turns back to Miss Smith. "Very well, if that's what you want to focus on. But remember, everyone needs to pay attention and learn something. You'll each have a turn." She gestures for another student to step forward, who nods eagerly before beginning their explanation of the testicles to the rest of the class.

As the students take turns touching, stroking, and even sucking on various parts of your body, you do your best to answer their questions and help them understand the male reproductive system. Your erection throbs in time with each touch, and it becomes increasingly difficult for you to concentrate on anything other than the rising pleasure that fills your body.