Both- in a way.

You make a big, devious smile. You only make this smile when you think of something that is not only clever, but deviously-so.

You walk over to the pair and realize that they are far too lost in their fucking to notice you. Stroking your cock, you move up behind Brooke. Without giving her warning, you spread her ass cheeks and thrust your cock inside of her!

"Holy shit- you filled me right up," Brooke cries out.

Her bodily reaction to thrust forward- away from the intruder- caused her to give Mrs. Rose a sudden, hard thrust into her own tight hole.

"You too," the Teacher says, nearly out of breath.

"Sorry- it's just...well, you know."

"All too well, dear. Don't stop now though."

You pull out a bit and thrust back into Brooke's hole. She times her thrust into Mrs. Rose with yours. After a few times, you get a good rhythm down.

"Fuck her harder," Mrs. Banx says.

"Yeah, fuck those bitches," Mrs. Kovac says.

"Fuck her harder than you did me," Mrs. Storm adds, hoping to please you.

You do just that, pounding the girl while grabbing her ass. She matches your speed and gives the bound Teacher the same treatment.

"I'm going to cum again," Mrs. Rose cries out.

"Make her ask permission," you say, "Do it, ****!"

"You heard him. Beg to cum. You're a **** here," Brooke says aggressively

"Please let me cum! Please let me fucking cum for you!"

"Wait- I want to cum with you," the student says, "I'm almost there."

You fuck Brooke harder and faster, hoping to drive an orgasm out of her quickly as well.

"Oh shit- I'm going to cum. Please let me cum, Master," she exclaims.

"Do it! Both of you cum right now!"

"You heard him- cum, you slut!"

Mrs. Rose and Brooke cry out in ecstasy as their orgasms are finally achieved! The former is especially happy, as she's been holding it back for a bit.

Their cries are loud, exuberant and create an amazing symphony. You hold out your own orgasm, because you have something special in mind.