I suggest you read chapter 1 of the story first.
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The scent of her arousal was overpowering. I knew she must have been highly turned-on from the ministrations Laura had been performing on her when I caught them in the bathroom, and it was clear that her catching me and now dominance of me (along with Laura) was taking her to a more heightened state.
"Come on Bob, I told you to do something," Susan commanded in a stern voice. I knew I had no choice but to continue doing what she told me, as I could not risk what she could do to my career if she chose to expose me for spying on her and Laura in the women's room.
I did as she had commanded, leaning forward as my hands were spread out on either side of her legs resting on the couch. This brought my face in contact with her panties, which as soon as I felt them I could tell were an expensive silk variety. The first touch also confirmed the state of her arousal, as they were absolutely soaked through. I tentatively stuck my tongue out, touching it to the sodden material. I drew my tongue up toward the top of her slit, then downward, and continued this pattern a few times. As I did this, I realized that her panties were pressed tightly against her labia, with apparently no pussy hair propping them up off of her crotch. Somehow I was not surprised to learn that Susan was clean shaven down there.
"That's a good, boy, now a little bit harder," I heard Susan say as I continued.
Something in her tone of voice or her choice of words hit me, and I began to pull out from underneath her skirt. But as soon as I removed my tongue from her panties, I heard her hiss, "Did I tell you to stop? Now get back there and do as you're told or there will be hell to pay, Bob. Just do everything I tell you and you'll get out of here with your reputation intact, I promise."
Then she added in a lighter tone with a chuckle, "But no promises about your manhood and pride."
Resigned to my fate, I returned to what I had been doing, now applying more pressure to her slit as I continued up and down. It was hard to believe it could happen, but her panties seemed to be getting even wetter as I continued, almost dripping with her secretions, causing the air under her skirt to become even more fetid.
I felt her scoot her ass forward a bit, bringing her crotch into even stronger contact with my tongue and face. I felt her body relaxing also, as she lay back further into the couch and spread her legs a bit more, pushing my hands even wider on the outside of them. It was becoming difficult to maintain my balance, and my knees were getting quite sore. This made me think of what Laura had been doing to Susan in the stall just a few minutes ago, and I was thankful that at least I had carpeting underneath my knees.
"That's better, my boy, you're doing a much better job now. You're obviously somewhat experienced at oral service, aren't you?" I heard her saying. I figured it was a rhetorical question, and saw no need to reply, so I simply continued rubbing my tongue up and down her panties. They were now so wet that as I did this they were getting pushed between her plump pussy lips, which I could easily feel on either side of my tongue.
"Just divine, my Pet. I wish you could feel how lovely this is, Laura -- he's quite a good pussy licker I must say. I bet Sarah has you doing this a lot, doesn't she Bob?" she asked. Again, I didn't answer, a little worried that she was bring my wife into the discussion. But then I heard her say, "I asked you a question, but I recognize it's a little hard for you to answer given your current position. Tell you what -- just nod your head up and down a little if the answer is 'yes,' okay?" I moved my head up and down enough that I knew she could see the movement.
I heard her reply, "I thought so -- I suspected from my e-mail conversations with Sarah that you'd be very good at this."
Hearing this, I froze -- what the hell did she mean, "e-mail conversations with Sarah"? I knew she and Sarah had occasionally e-mailed with each other since they had met at a couple of academic conferences, but I never suspected that our sex life was a topic of their discussion.
"Oh, are you a little shocked to hear that we e-mail about this, Bob? Well, you'd be surprised at the things that we girls like to chat about. But please do get back to work, I didn't tell you to stop."
I simply sighed and continued licking her. I could only imagine what they had been chatting about. Sarah was a very sexual person, and we enjoyed a great sex life -- including lots of oral sex -- and I knew that she was certainly comfortable talking about sex. So I was not totally shocked to hear that she may -- if Susan was telling the truth -- have discussed our sex life with Susan via e-mail.
"Laura, you simply can't imagine how nice this is. A distinguished professor like Bob here, on his knees, lapping away at my panty-covered pussy in a woman's room. Maybe we could arrange for you to experience it too," she said with a laugh. "But I'll tell you what -- for now, maybe I can just give you a better view of the proceedings." With that, I felt the material lifted off of my head as Susan pulled her skirt up and evidently must have bunched it up around her waist.
The cool air felt good, as it had gotten quite hot and stuffy underneath the skirt. It also let some of the scent of her arousal out, so that I was not quite as overwhelmed by that heady aroma. But my sense of relief was replaced by a sense of shame as I realized that Laura now had a very clear view of my tongue running up and down Susan's panties. I heard Susan sigh as she leaned a bit further back into the couch.
"Isn't he lovely, kneeling there attending to me, Laura?"
"Yes, Professor Bascom," she replied.
"Oh, come girl, you can do better than that. Tell me what you think of what you're watching?"
There was no reply for a few seconds, as Laura was clearly contemplating what an appropriate response would be. I then heard her say with a slight giggle, "It does appear that he's quite good at what he's doing, and not only that, but he's enjoying it too. Look at his penis."
As she said this, it brought my attention back to the fact that I still had quite an erection. I had long since passed the point of fear and shame, and was now just responding to the physical sensations as well as the psychological toll of being dominated by Susan.
"Oh yes, I see what you mean," Susan laughed back. "He does seem to have quiet a raging hard-on, don't you Bob?" I nodded again to acknowledge that I heard what she said.
"But now I want to feel you a little more directly, my sweet, so let's have you get that tongue around my panties and directly on my pussy, shall we?"
Hearing this I began to lean back on my haunches and removed my hands from the sofa in order to use them to pull down her panties. But before I got too far I heard Susan's stern voice say, "Stop -- I didn't tell you to move did I?" I froze and then returned to the position I had been in, leaning back forward again.
"You don't need to use your hands to do that, now do you Bob?" she said. "Use that dexterous tongue of yours to move my panties out of the way."
By this point my tongue was actually getting quite tired, but I knew I had no choice. I moved it over to the side of her panties and stiffened it in order to push them aside. As wet as they were, it was still difficult to move them enough to provide me with freer access to her pussy lips. She recognized my difficulty, and scooted around a bit, which helped loosen up her panties from her body. With some continued effort, I was able to move them aside enough that her big lips both popped out from the side of the panties.
"Ah, that's much better, my Pet. You should now be able to do a much better job. Let's see if you can help me cum."
With the panties now at least partially out of the way I was able to get my tongue all over her labia. Confirming what I had suspected when I had first started, there was absolutely no pubic hair anywhere. She was perfectly smooth, without a trace of razor stubble. I gently sucked on each of her luscious lips, pulling each away from her crotch, running my tongue all over it. She was right -- I had had a lot of experience going down on Sarah, and truth was, it was one of my favorite activities. And I knew from the way Sarah responded and from what she told me that I was very good at it. I hoped that if I was able to satisfy Susan that this would be the end of the entire affair. It would be an awful memory, but I prayed that it was just a bit of fun for her and she'd never speak of it again. And I trusted that she had enough control over Laura and her future that Laura would never speak of it to anybody if Susan told her not to.
So I concentrated on satisfying Susan, using all the tricks in my cunnilingus textbook to try to bring her to an orgasm. After sucking on her lips, I dove my tongue as deep as I could get into her pussy, touching the walls on either side. I then began to pay attention to her clit, lightly tonguing it, but was having difficulty because her panties kept getting in the way.
Susan must have sensed my problem, because I felt her sit upright a bit and heard her say, "Come here Laura, sweetie, I need your help." I heard Laura rise from her chair, and as she did so, Susan said to me, "Okay, Bob, you can sit back for a second."
I did as she told, relishing the opportunity to give my knees and tongue a break. As I pulled back and sat on my haunches, I could feel the cool air on my face, which was absolutely dripping from Susan's pussy juice.
As I felt Laura approach us, Susan said, "Okay honey, help me out here, will you? First of all, take off Bob's blindfold for him."
I felt Laura stand in front of me, between the two of us. As she did, I thought I could smell her arousal also. I couldn't be sure, but I swore it was a slightly different scent from what I had been experiencing with Susan. I didn't know if Laura was still in a state of shock, fear, or arousal, but given the olfactory evidence I thought I had encountered, I guessed it was the latter.