You suck it

You suck it, Claudia pushes your head on the dildo so you deepthroat it.

Then you sit on it, it is so huge in your ass. It’s hard to focus on Ms Ren class with your cage and now this fat shaft inside your ass. You did not hear something she said so you raise your hand and ask.

"You need to stand up if you want to talk."

So you stand up. She didn’t give you permission to talk so you sit back down, maybe too quickly as the dildo hits your prostate and you let out a small moan and cum a little.

Claudia, watching all of this with great pleasure, is rock hard and starts touching herself.

For the rest of the class, Ms Ren makes male students stand up and down repeatly by asking them questions to **** them to be fucked by their chair's dildo.

At the end of the class, Ms Ren give back tests scores and announces to John that his plug is remotely controled and can change size. It’s size will be determined by his grade. An A = 5in, a B = 6in, a C=7in, a D=8in and an F=9in. Oh and it’s a little defective so it might (it will) change size randomly at unexpected moments (she has a remote, she will play with John, especially during exams, or when he is not in her class.)