The English teacher teaches sex ed too

As i walked towards sex ed with Sarah smirking beside me, i dreaded what humiliation was about to commence. To think i had gone to all this trouble to keep my satchel, only to have it removed and me to open up to a whole class! As i entered the class, Ms Wilkins says "Ah, and here is our special guest. Today, Emily here will be modelling for us. Please sit on my desk Emily." Reluctantly, i jumped on her desk. the cold hard wood on my butt reminded me of the humiliation i was about to endure. "Emily, please remove your satchel." As i complied, i felt a million stares on my pussy. "Please spread your legs." I took a deep breath and complied. I closed my eyes and clenched my fists, and heard many clicks, each a memento of my secret spot. "This is the vagina" Ms Wilkins said. "But of course, you all knew that. Instead, today we will be having a live action performance of how this piece of female anatomy functions. As you see, it is quite elastic" she said as she pulled my folds apart. "As you can see, the vagina is also quite deep." Ms Wilkins then proceeded to insert her fist straight into my pussy, making me gasp. "Observe how i have fit my whole forearm inside Emily here. Now, Emily will give us a demonstration of arousal." She pulled her fist out and asked me to masturbate. And having no other choice, i slowly pulled my fingers towards my pussy, and inserted them. I slowly start moving them, faster and faster, until my fingers were drenched, and i was close to cumming. "Okay, that's enough for now Emily" Ms Wilkins says. I didn't listen and continued to fap. "I SAID THAT IS ENOUGH!" Ms Wilkins shouted. "You are here because you have performed sexual misconducts in my class before. If you continue this behaviour, the consequences will continue to increase in severity!"