Very clinically

Ms. Young is still gripping your cock and from where you stand you can see down the front of her blouse as she sits below you. Her tits are big, and very firm looking. They always stick out like twin torpedoes on her chest, her thick nipples often protruding through the thin clothing she wore. Your cock starts to grow erect as she handles it, even with your embarrassment, and your monster rod swelled to where she could not fit her hand around it.

“Ah, perfect I was hoping we would get a good erectile response. Girls I want you to note that the males are very easy to arouse, even when in less than ideal situations, all it took was me positioning myself to allow the male to see down my shirt and glimpse my breasts to cause his erection. I also want you to note that this is a very large cock, in fact the largest I have personally seen,” she looks over at your giant cock like she was looking at a bug through a microscope and continued, “You will not that his member is circumcised, or cut, as the slang term goes. The male penis is marked by a large head, this is the most sensitive part,” and you have to stifle a moan as she strokes the head of your cock, and a thick shaft.”

She stated to slowly pump your cock as she continued to talk. “You will note that the testicles are in a sack right below his penis, and that they hang loosely away from the body.” She handled your balls as she said this, and she continued to pump your cock. Waves of pleasure were washing over you and you knew you would blow your load without too much more stimulation.

“You will also note that as the male becomes more aroused he will begin to dribble pre-cum out of the head of his cock.” She pulled you cock down so the girls in the class could see it. “You will notice the clear white fluid leaking from his piss hole. This makes his cock much more slippery and allows me to increase the speed of my manual manipulation of his cock. Her hand slides up and down over the length of your cock, and she knows just how to squeeze it up under the head where your cock was most sensitive. You moan in pleasure as she jacks you off, and you wish you could fuck her. You notice that the girls in the front row are looking at you with fascination, and maybe some desire, especially Colleen Stevenson, a hot blonde with a killer body who you have always lusted after. You imagine that Colleen is naked and you are fucking her hard, making her big tits shake.

Your erotic daydream is interrupted by Ms. Young again, “Oh good girls this is perfect you will note that his testicles are now contracted hard against his body. This is a sign that the male is almost ready to ejaculate.” She slowed her jacking of your cock, and then removed her hand. Your cock was engorged to its full 12 inches of length, the fat fist sized head was flared and almost purple in color, shiny from your pre-cum, you could tell you were seconds away from a mind blowing orgasm, but Ms. Young stopped just in time. You groan in frustration but she just ignores you.