A personal one

(No, no, That would be cheating, I gotta do this myself.)

You go back to your desk and sit in your chair. You pull out your dildo and knowing you have 30 minutes, you remove your skirt, hidden from view by your desk. You then slip your dildo inside you and you start fucking yourself. You keep an eye on your class and only move when everyone's heads are down looking at their papers. You bring yourself to climax a dozen or so times in 30 minutes.

You put your dildo away and pull your skirt back on. The students start bringing their tests to you and all is well.

You finish class and go home, ready for tomorrow. You get naked with Dean and crawl into bed.

"How was your day?" He asks.

"It was great, I had so many orgasms and-"

"I'm sorry, what?"

"I came alot, like you wanted, you did give me that dildo remember?"

"Oh, right, but uh, in class?"

"Yeah?"

"Can't you get in trouble?"

"Probably, but the students wouldn't say anything if they saw, it's all boys, horny as fuck too I say."

"Um, you didn't fuck any of them did you?"

"No!, That would be cheating, I would never."

"Okay, good."

You two talked for a bit more then fell asleep.