Mr Adams looked around his classroom, watching his students eyes as their brains churned through the new reality he was feeding them.
Peter stood at the front of the class, obviously enjoying being a demonstration aid, his impressively large penis was half hard with a bead of pre-cum at its tip, his face was slightly red with embarrassment but he was also smiling as his eyes floated around the room. Mr Adams noted the slightly shiny trail slowing making its way down Peters leg, his anus obviously getting wet as he accepted his new bottom centered existence.
"Now, as I was saying, young men, like Peter here, have amazingly talented bodies, typically focused in and around their anus, and penis and balls, this does extend to internal anal passage structure and the ability to lubricate ones self. As peter probably already is aware, his anus is able to stretch to accommodate practically any size, and length, while this ability has developed to attend to most male species, and I'm sure Peter could easily take the penis of any male in this room, he could just as easily play mare to a stallion, an elephant, a sperm whale, though I don't know how practical that could be." Mr Adams explained, earning a giggle from his class, while Peter's redness deepened a little, he hadn't known just how accommodating his anus could be.
"Their mouths, throats and indeed their entire gullet is just as accommodating also, but for today we will focus on their anus's." A collective aww could be heard from the class, Mr Adams smiled a little at this.
"As I have Peter here to demonstrate, I will show what I can of his bodies anal ability. So Peter, if you could turn around and show your bottom to the class," Mr Adams instructed, Peter obediently turned as his teacher continued. "If you would bend over and lay stomach down on my desk, that's good, now I want you to imagine your anus opening, imagine it soaking wet and as open as possible, once open it will stay that way for as long as you want it to, you could walk around this room all afternoon and it would never close, not even a millimeter."
The class, and Mr Adams watched as Peter laid bent over the desk, his small but plump bubble butt on show, glistening with his lubricant as his small pink anus gently opened, wider and wider, Mr Adams's grin widening with it. Peters anus opened completely over a few minutes, until it was as opened as it appeared it was going to be, Peter gently moaning at the feeling of air on his insides, which made him produce more lubricant.
"As you can see class, Peters anus is gaped open, enough that I can easily place my close fist in him and it doesn't touch the sides." Mr Adams explained as he placed his fist in Peters cavity.
Gasps could be heard around the class as Peter listened, he knew Mr Adams hand was very near him but couldn't feel it touching him.
"Next I will demonstrate depth..."