Susie does Porter while you do Susie

You whisper instructions to Professor Porter, then walk behind Susie.

“I'll give you an A+ on the test,” says Porter desperately.

“Whoa, really?”

“Yes. But you have to eat me out. I'm really horny and I'm a total nymphomaniac, so I have to have it right now. Right now!”

Susie's eyes go wide. She drops her backpack on the floor with a thud.

As she stands there stunned, you get behind her and whisper into her ear, “You can't consciously feel my touch and you won't notice your clothing moving when I touch you. But... you will notice the effect that my touch has on your body.” You slide you hands around her waist, then cup her delicate little breasts through her bright pink t-shirt.

“Um, I don't think so,” says Susie.

“Please!” begs Professor Porter. “I need it so bad! I... I won't even be able to orgasm from it, because slutty nympos like me can't orgasm. It will just give me a little relief until I have to go find some cock in a couple hours.“

All of this is true, it was part of the instructions you gave her.

“But I need it!” she continues. “I need you to lick me right now! You can have an A+ for the whole semester, just lick my slutty cooch!”

“I don't know,” says Susie. She seems to actually be considering it even without you commanding her to.

You slide a hand down and rub her crotch through her jeans. She breathes deeply, turned on but not knowing why.

“Let me do something before I decide.” Susie bends down, pulling herself out of your hands. She opens up her backpack and takes out a half empty bottle of whiskey. A quick twist of the lid and she up-ends the bottle into her cute little mouth. She looks the professor over, then takes a bigger swig. “Okay, I'll do it.”

Professor Porter hops up on her desk and spreads her legs. Susie moves closer. She still thinks the professor is clothed, so you say, “You can see that she's naked, but don't think about how she got from clothed a second ago to naked now.”

Susie bends over with her ass sticking up in the air. You stroke her tight little butt as she takes her first tentative lick of pussy.

“Since we're getting so personal,” says Susie, “should I call you Gillian now?”

“No.”

Susie takes another swig from her bottle, says, “Okay Dr. Porter,” and dives into the older woman's pussy.

You reach around the party girl's waist and undo her jeans. They're very tight, so it takes a lot of effort to pull them down. There are no panties, she probably forget them when she tried to get dressed with a hangover. You line your dick up with her tiny slit, then drive it in hard.

“Oof!” cries Susie. “I think... I think I'm getting off on this!”

Professor Porter grabs the young girl's head and pushes it into her sloppy wet snatch. “Don't talk, just lick!”

You piston your cock into Susie and she works her teacher's pussy. Soon both girls are moaning. Susie works hard, but still occasionally takes a sip from her bottle. She's amazingly good at not spilling any despite you pounding into her from behind.

The pressure builds up in your balls. “When I say 'now', both of you girls are going to cum. Professor Porter, like I said before, you won't get any... joy out of this because you're a slutty nympho. You'll just get... some temporary relief. Susie, you will... cum harder than you've ever cum in your life. Okay... hold on... Now!”

The three of you cry out. The professor barely feels it, but you and Susie practically explode. Susie falls to her knees, still keeping the whiskey bottle in her right hand upright. Your cock slides out of her as she falls, causing you to spurt your jism on her back.

The three of you pant heavily. Susie finishes off the bottle and looks up at her professor, unsure why she enjoyed eating her out so much.