Last week, you'd never expected to have someone live-critique your sexual technique...

"Now, contrary to what you might expect, 69 isn't as universal as you might think," Mistress says to Elizabeth as she positions you on the table, "Keep that in mind with Taylor. The positioning can be awkward for many couples, and many people have difficulty focusing on enjoying the experience while still properly pleasuring their partner. If it's not working for you, there's nothing wrong with considering different positions, or switching off."

Looking to the side, you see Elizabeth nodding intently, while... Taking notes. On an old-fashioned notepad. The sight of someone taking notes in the middle of a sex show was so out of place that you're tempted to laugh; she really was a nerd.

"Now, personally, I wouldn't actually bother with this normally," Mistress casually continues, "The deal with little miss slut-in-waiting here was to pleasure me in for the week, not for me to pleasure her. The little prude needed some lessons in what sex was actually supposed to feel like, so I gave her some lessons yesterday... But a day was enough for that. If I just wanted to enjoy myself properly, I'd just sit on her face and let her do all the work - or maybe mix in some shameplay or domination if she stopped being fun. But this is a unique opportunity to show you what you should do with Taylor, so I would be a failure of a professor if I didn't seize it. So you'd best appreciate this and pay close attention, Elizabeth."

"Yes, Ms. Devlin!" Elizabeth chirps, "Um, what is that you've put her on, Ms. Devlin?"

Elizabeth points to the odd wedge supporting your head, as you otherwise lay on Mistress's "desk", legs spread open.

"A sex pillow, naturally," Mistress replies, "She's going to be bending her head upwards for quite a while, and I don't trust her not to slack if she's **** to choose between comfort and my pleasure. This eliminates the need for that choice."

"I wouldn't slack!" You protest, as Mistress climbs on top of you.

"You'd rather I take the pillow and strain your neck, then?" Mistress asks.

"No, the pillow is a present I will treasure, Mistress," You reply to her pussy.

"How do you choose who goes on top?" Elizabeth asks, as you hear writing.

"Just try it out yourself a couple of times," Mistress replied, "You'll soon learn which you find more comfortable. Now, come over here."

You feel mistress's breath hot on your pussy, and hear the sound of a second person leaning on the desk. Two days ago, nobody had seen your intimates, at least not in an adult context; now, two different women had in as many days. You desperately wished you knew what you should look like here. What was the etiquette for having your lower lips examined?

"So, as you can see, the positioning here is completely different from standard cunnilingus," Mistress lectures, "Access to the clitoris is improved, but the need to support your body restricts your ability to easily make use of manual stimulation. For Taylor, you should probably warm her up first by tasting her lips... But Maya here is warmed up enough that we can go straight to the clitoris."

Mistress's tongue runs over your clit from a totally different angle than yesterday, and you feel your hips jerk upwards in response - right into a strange bump that you quickly realize to your horror is Mistress's nose.

"And that's another benefit of this position," Mistress says, drawing her tongue back, "You can really smell your partner's arousal, and get a much better look at how your partner is responding to your efforts. Though, there's no real angle that can let you see your partner's face here."

"Maya smells so good, though, that it's probably a good trade..." Elizabeth answers, "And the way her hips squirm, I could watch that all day. Not, uh, not that she has a bad face or anything..."

"One downside of this position, however, is that when your partner gets lazy..." Mistress says, frustration evident, "You can't easily jam her head into place, or slap her backside in encouragement."

...Darkness! You were supposed to be licking here, not listening! Hurriedly, you get to work, running your tongue up and down her lips, working your way in like she'd taught. You could tell from her taste that she wasn't as worked up as she was when you started yesterday, though her body starts responding quite quickly; you soon hear a "mmm" of appreciation in response, and are rewarded with pleasure in turn as you feel a tongue explore your own depths.

"This doesn't really seem to allow for a lot of flexibility, though..." Elizabeth says, as she starts walking around the desk, "She's really going down on you, but isn't that kind of limited? She can change up her intensity and focus, but you can't really break into a kiss, or start rubbing her breasts... At least, not pleasurably."

"You're not wrong," Mistress says, withdrawing her tongue as Elizabeth circles back, "But with three points of pleasure, and the benefits of mutual intimacy, it's a good choice for many couples. You need to get the foreplay out of the way first, but it's more flexible than missionary in many ways."

"Three?" Elizabeth asks, leaning in to look more closely.

You feel Mistress's long, slender tongue slip into your anus as you give a little squeak of surprise, the alien sensation slithering around a new hole. Instinctively, you tighten your hole - before loosening again, realizing you shouldn't grab her tongue like that. The feeling is strange, but... Not unpleasant, as it squirms inside you. Unlike your mistress's other attentions, however, you don't really feel like this one is for you...

"Three," Mistress says, pulling her tongue back out, "Though if you're not a demon, be sure to clean up well first. You wouldn't want to cause Taylor any problems down here."

Elizabeth nods, as you hear her lean in. Darkness, she's not staring at your butthole, is she? Please say she's not staring at your butthole...

"What does she taste like?" Elizabeth asks, "I've always heard that analingus supposed to be pretty bitter?..."

Please tell me we're not talking about this, You think despairingly, as you focus on your licking in hopes of distracting her.

"Like shit, literally," Mistress answers, to your burning shame, "It doesn't bother me, but you will probably want to stick to fingers, after grabbing some honey from her honeypot. Human tongues kind of suck for that anyway, though, so don't feel too bad if it's not to your taste."

"What about when one of you climaxes?" Elizabeth asks, "That has to be pretty distracting, right?"

"Well, let's find out..." Mistress asks with a malicious edge, "Surely, I would be displeased if I were to put all of this work in, without a reward of my own..."

Renewed pleasure stabs through your body, as her tongue assaults your clitoris with practiced ease, mercilessly squeezing every drop of satisfaction from you. You think for a moment that she intends to wring a climax from you on the spot, but just as quickly she returns to the same rhythm from yesterday, letting pleasure build up through your entire body, working the ebb and the flow; with the serious pace she sets, however, the difference is only measured in seconds, and you feel a hard orgasm run throughout your body, one far harder than if she had simply taken one at the start.

...And you feel your limbs go limp as you pant into her pussy, your energy gone as you futilely try to focus on her reactions. Your rhythm was destroyed, though with your **** need to please your Mistress, you do at least keep trying.

"And that is the other issue with 69," Mistress says, in between lazy licks at your wet lips, "It sucks when one person just goes off on their own, either leaving one with nothing to do, or forcing you to change positions when it's just getting good. Though at least my little slut-in-training knows to try her best anyway."

"Though it can be great for you humans when you're both ready to come at the same time," Mistress adds, "That requires good communication and experience, however, so don't expect to get it right with Taylor at the start."

As the two of them keep speaking, using you as a living example, you recover your rhythm, and hasten your own pace, determined to give Mistress an orgasm of her own. She seemed so unflappable as she taught, but the dripping black wetness flowing down your throat proved your efforts were working, and soon you get a quiet gasp from her as she climaxes in return.

"Mmm, she's getting better at this," Mistress remarked, "I wasn't expecting to be repaid for minutes, if I'm being honest."

"Wait, that was?..." Elizabeth starts to ask, before trailing off.

"Better than it looked, dear," Mistress answered, "I'm a professor, and this is a lesson. She's the one who's meant to react here."

"Yeah, with all of that twitching and shaking, she reacted way more than you did," Elizabeth remarked.

Mistress stands up and stretches languidly, showing off her naked body as she jumps back off the desk. You think it's over for a moment, much to your confusion, before she starts posing you again, this time putting out a second pillow.

"Now, one on top and one on the bottom is the iconic 69 arrangement, but it's not the only one," Mistress lectures, "Laying on one's sides is also another position that is, arguably, far more comfortable. It allows for better use of your hands, and better distributes the work. But... It doesn't allow for quite as easy vaginal access."

As Mistress speaks, she lays down next to you and starts moving her fingers into your pussy, speaking to your lower lips.

"If you or Taylor are a fan of penetration, this might be a better position for you," Mistress continues, "But Maya here, despite being a straight girl, ironically responds better to other forms of stimulation. She'd probably do better with me licking away on top of her, but you and Taylor should explore with many different positions to find what suits you best."

Despite her words, she doesn't stop gently pumping her fingers in and out of you, her fingertips seeking out new ways to tickle your nerves; as she finishes speaking, she adds her tongue to the mix, licking your clitoris. The dual stimulations are a potent mix, and your body is soon overwhelmed once again.

For your part, you fumble at Mistress's opening, but trying to balance two different actions with the strange angle and Mistress's touch all prove too much for you - you barely work out what you're doing before the wave crashing through your body throws out everything you'd accomplished... Though being on your side like this, you find it much easier to continue licking at her until you're thinking clearly enough to start with your fingers again.

"Wow, that took almost no time at all!" Elizabeth said, "Didn't you say penetration was boring for her? Is it really that good?"

"Hardly," Mistress answered, "My little slut-in-training here is just super-sensitive."

"Ahh, I see," Elizabeth nods, "How lucky for her."

"That was a joke, dear," Mistress responded with concern, "Don't get the wrong idea. More seriously, penetration depends on the person involved; what mattered here was the use of two forms of stimulation at once. That can be overwhelming if applied improperly, but done well, of course it's going to have a strong effect... At the cost of leaving me with precious nothing to do except talk to you, because she's feeling too sensitive now."

"You could go for the butt again?" Elizabeth suggested.

"Another disadvantage of the side-69," Mistress shook her head, "The angle on that is too much of a bother, since she didn't seem terribly interested earlier. ...Ah."

You kept steadily working through their conversation as they languidly speak next to you, and finally, you're rewarded with a tiny, almost overlooked gasp from Mistress. She was right; this position really wasn't your favorite. Especially since so much of her sweet juices ended up on the table; it was both dirty, and a waste. You didn't know how human juices tasted, but Mistress's were an energizing treat, and you felt like you'd need the energy.

As Mistress pulls away from you, you roll back onto your back and stretch a bit. These positions weren't exactly _uncomfortable, _but giving and receiving was definitely a bit different from simply giving or receiving. Sitting up, you blush a bit as you notice that Elizabeth's hands... Have moved underneath her clothing, as she's very obviously starting rubbing her breasts and crotch.

"Now that you've gotten into the spirit of things," Mistress says to her, "Why don't you try suggesting something new?"

"Why not scissoring?" Elizabeth says, leaning forward eagerly, "I've gotten a good view of your pussies, but I'd love to see your beautiful bodies as well!"

"Ah..." Mistress responded, tapping her chin, "Yes, that would be a good one, while we have an audience. But I can't recommend you do that with Taylor on your first date. It's a tricky position to get right, especially for two first-timers. It feels great, though."

"Eh?" Elizabeth responded with confusion, "Isn't it, like, the most basic of basics?"

"No, that would be 69," Mistress disagreed, shaking her head, "Getting your clits lined up just right, getting both of you enough pressure to work but not hurt, and getting a good rhythm going that works for you both... It requires a lot more communication and skill than, say, mutual masturbation. It's iconic, but it's not simple - and you want simple for your first time."

"But..." She went on, "It would be good for you to try a sex position that lets you kiss and rub her chest, so some form of tribadism would be good to learn. My little slut-in-training here will help demonstrate how to make best use of your thighs."

As Mistress finishes speaking, she grabs you closer to her, and starts kissing you intensely. You blink in surprise for a moment, wondering what this has to do with thighs; your question is answered in a moment as her leg comes up between yours, her thigh gliding gently yet firmly between your sex. You feel a thrill run through your body at the soft jolt of pleasure, as she repeats the movement, and you get the idea.

In a moment, she breaks off the kiss and looks at you again.

"Getting greedy again, my little student?" She asks, scowling.

It takes you a moment to realize what she means, until she spreads her legs a bit wider; then, it strikes you, and you move your left leg in to place, as she rubs her own sex into your flesh, a strange and warm sensation running against you.

"Do you have a nice view, Elizabeth?" Mistress asks off to your left, as you glance as well.

"Very nice," She answers, still masturbating, "You have such a lovely set of breasts, Ms. Devlin... Oh, though, yours are nice too, Maya. They suit you quite well, though I think mine are better now... Um, sorry, I didn't mean to say it like that!"

You can't tell if the red of Elizabeth's face is from the arousal or embarrassment, as her breathing becomes rough and her pace accelerates... Though you're soon distracted from that question by Mistress rubbing your breasts as well, as she resumes your kiss.

You don't feel your orgasm approaching anywhere near as quickly as the sex from earlier or yesterday, but... Somehow, this is far more satisfying for you. Having your entire body caressed like this, as you pleasure your amazing lover, it felt so much more intimate than before; you were acting and being acted upon, lusting and lusted after. Instead of just focusing on a part of her body, you could look her in the eyes as you made out, while touching all of her best spots.

This felt like... Making lust. You enjoyed her body, and she enjoyed yours; it wasn't as... Limited, as what you'd done before.

After a moment, Mistress broke off the kiss, and resumed lecturing.

"Now, as you can see, the biggest advantage of this position is the freedom it gives you," Mistress said, "You have access to her full body, and it can easily transition into a variety of other positions. I could start stimulating her sex with my hands, slip down for easy oral, or simply continue teasing anywhere I please. The disadvantage is that continuing to rub her like this is unlikely to bring her to climax in a timely manner, regardless of how horny she is at the moment. That is not, in and of itself, a problem; it makes for a fine form of foreplay, and it's quite pleasurable in its own right. But it is something you need to know for Taylor, that you should switch to another position to set her off after priming her."

"Ah... F, fuck..." Elizabeth answers, breathing rough, "I really need to write that down, but..."

...Nerd.

"Please, Mistress..." You whisper in Mistress's ear, "Let me come..."

By way of answer, Mistress lowered her hand to your waiting pussy as she stopped rocking her leg back and forth, sending you off to paradise with a single, practiced motion.

Fuck, she was good at this!

Not confident in replicating her feat, and knowing your place, you slid back down between her legs and kissed her clit, sucking on it gently as you brought her to climax as well. She gave an answering sigh, and you knew that you were successful - not that it stopped you from licking up some more of her juices first.

"And that concludes our 'Lessons for Two'," Mistress said, "Hopefully, you'll remember some of that for tonight. I can't have my precious students going single."

"Yes, Ms. Devlin!"

"Yes, Mistress!"

The two of you answered in chorus... To Elizabeth's confusion, for some reason. Of course you were going to pay attention to Mistress's lessons, even if you weren't a lesbian.

"Now, then, Elizabeth... Could you take her to the cafeteria and make sure she gets a proper breakfast?" Mistress said, "She's not nearly as badly off as she was yesterday, but the poor girl gets too into these things. It's going to be an hour or two before she thinks clearly, and I don't want her wandering off with some pick up artist."

"O... Kay?" Elizabeth says, uncertainly, "Well, I need to ask her to help me with Taylor anyway. Um, do I have to wait the full hour for that?"

"Unless you want her to sound high when she calls, probably," Mistress answers, "Though for all I know, that wouldn't be a problem. Now, shoo, I have another meeting lined up."

With that, she kicks you out of her office... Though, at least she lets you get dressed again first.