Human Anatomy and Sexuality 101 – Part Two [MF] [Exhib] [HandJob] [Oral]

Week Two – The Human Body

I got to class 20 minutes early the next week, and Kate and Rachel were already there. Rachel looked like I felt – nervous, queasy, excited (horny?). After exchanging pleasantries, Kate led us into a back room that was used for storage of old books and other supplies. There were two bath robes hanging on a hook on one of the walls next to some empty shelves. “We’re going to jump right in,” Kate started. “You two will strip completely naked, you can put your clothes here”, she indicated to the shelves. “Put on the robes, and wait for me to come and get you. Any questions?”

I knew this was coming, but I was hoping maybe we would ease into it a little…apparently I was wrong. “Kate,” I said quietly, almost hoping Rachel wouldn’t hear me, even though she was standing right next to us, “I have a, um, question. This is kind of awkward,” of course Rachel was hanging on every word, “but what if I get an erection?” Both ladies’ eyes went automatically to my crotch, where there was already a bulge forming in my pants, and then quickly back up to my face. Rachel giggled nervously, but Kate was nonplussed.

“Of course you’ll get an erection,” she said simply. “I would be surprised if you didn’t. This is Human Anatomy and Sexuality,” she said, stressing the last word, “boners are a necessary part of sex – well most of the time – and we’ll be covering them, pun intended,” she gave me a wink, “extensively this semester. But you’ve intrigued me,” she went on, looking again at my crotch, “let’s see what we are working with. I was going to go back in the room while you two changed, but maybe I’ll stick around for a minute.” She stopped talking, looking at us both expectantly. I looked at Rachel, who was looking back at me, both of us waiting for the other to make the first move. Finally I started unbuttoning my shirt, figuring that was fairly harmless. It broke the spell and she started undressing too.

Now I don’t consider myself anything super amazing to look at, but I knew I wasn’t bad looking. At 5’11”, 200 LBS, I kept myself in decent shape. But Rachel – she was gorgeous. I couldn’t keep my eyes off her as she pulled off her t-shirt and then her jeans, leaving her in a simple white bra and panty set. By the time I was down to my boxer shorts, my cock was straining to get out of the buttoned fly-hole, precum spots clearly visible, and her panties had similar signs of wetness. I couldn’t believe that this was happening – for years I had dreamed of seeing my sister-in-law naked, and now I was going to. Her bra came off and she made no attempts to cover her beautiful breasts. They looked to be about C cups and were incredibly perky with tiny brown nipples, hard as rocks. Our eyes were locked together as we each removed the last piece of clothing and as we stood before each other completely naked, it felt like we were the only two people in the world. I could feel how hard my cock was, and finally she looked down at it, breaking our stare. She gasped involuntarily at my seven and a half inches, pulsating with desire and pointed straight at her. I looked down too, her pussy was completely shaved, her lips puffy and wet with desire. It was the most glorious thing I had ever seen. I wanted to fuck her so bad it hurt. “Wow, there is some chemistry here,” Kate said breathlessly, breaking us from our trance. “I love it! And damn did I get some good-looking subjects this semester. You guys are amazing. Put the robes on, I’ll come and get you in just a few minutes,” she said as she walked out the door back into the classroom.

It was suddenly awkward, and we both laughed nervously. “I can’t believe I let you talk me into this,” she said laughing.

“Me?” I retorted, “I’m pretty sure this was your idea!” The moment had ended, but she kept stealing glances at my still-hard penis that was seeming to ignore the messages my brain was sending for it to calm the fuck down. “I don’t know if I can go out there like this,” I told her. “You look incredible, I just look horny.”

She laughed, “Don’t worry, you look pretty incredible too. I don’t think any of the girls in there will be complaining. Leslie said you were big but damn, that thing is a sight.” The attention only made me blush and my cock even harder, if possible.

We both put on the robes that were hanging on the wall and before we knew it, the door opened and Kate beckoned us to come out. The chairs had been arranged in a circle again, with two empty ones in the center back to back, which Kate directed us to sit in. “Now class”, she said, “I trust that we can all be adults here. It’s not easy to take off your clothes in front of people, especially your peers that you might not know very well. Brian and Rachel are going to be nervous, among other things, so let’s all show them respect and gratitude for being our object lessons this semester. Today is going to be an overview lesson where we get to know our subjects and their bodies, we’re not going to get into specifics about different parts today. Feel free to come up and observe, take notes or draw pictures. Please put your phones away, we will have no photographs in here, and only touch if you have permission. Now Brian and Rachel, please remove your robes.”

My penis had not subsided yet, and I’m pretty sure everyone could see the bulge in the front of my robe when I stood up, but I removed it anyway. Finding courage that I didn’t realize I had, I forced myself to not cover my dick with my hands as I just stood there for a minute, with at least half of the class staring at it. I turned slightly and saw that the other half of the class was staring at my naked sister-in-law, who was also standing still, not covering up and looking like a goddess or sculpture or something. She turned to look at me and winked, then turned back to the class. After the initial shock had worn off, we walked around the two chairs that were in the middle of the room so that everyone in the class could get a good look at both of us. Then Kate directed us to sit down in the chairs, and told the other students that they could walk up and observe us.

The other class members started slowly walking around, getting closer to us but seeming nervous to approach. Finally one of the female students approached me tentatively. I remembered from the previous week’s class that her name was Liz, and she was very attractive. She seemed very interested in my penis, which still hadn’t subsided, and was looking at it closely. “I’d love to draw it,” she said breathlessly, “would that be OK?”

“Of course”, I said, “pull up a chair. Would you like me sitting or standing?”

She indicated that she wanted me to sit, and she pulled a chair up and sat facing me, her face only about a foot away from me. She pulled out a sketch pad and started drawing, looking at my still erect cock from several different angles and distances. After drawing for a few minutes, I heard her pencil stop. “Can I touch it?” she asked quietly. The rest of the class had been walking around, looking at both my and Rachel’s bodies, but nobody had asked to touch anything yet. I nodded my ascent, and she gently touched the side of my head, a gesture so soft that sent lightning bolts through my body that caused me to shiver involuntarily. The rest of the class was watching now as she took two fingers, and rubbed one on either side of my head, back and forth, very gently. The sensation, mixed with the rest of the experiences of the night, was really having an effect on me.

“If you keep doing that, I’m going to cum,” I said to her, realizing that the whole class was watching.

“That’s OK with me, if it’s OK with you,” she responded. I could only nod that it was OK with me, and her speed increased. I couldn’t believe that I was being jacked off by a complete stranger, surround by 18 other people. The thought of it pushed me over the edge, and I released rope after rope of hot cum. Liz was ready, and had her mouth right the tip of my cock. When I came, it went directly into her mouth and she swallowed quickly until each drop was gone. I looked around and everyone was watching with looks of arousal on their faces. I was embarrassed at first, but then realized that it was OK when I looked down at Liz who was smiling, licking her lips. “Thanks,” was all she said.

“Well, we weren’t supposed to get into masturbation and hand jobs until week 4,” Kate said, breaking the tension in the room, “but what an introduction.” The class laughed, and some applauded. “Unfortunately we are out of time for today,” she went on, “but the promise of next class will surely keep us all excited throughout the week. Next class we will discuss the male and female reproductive systems.” And then she dismissed the class and indicated that Rachel and I should go into the back room to get dressed.

“Wow that was pretty hot,” Rachel said when we were alone, “but it’s not really fair that you got some release and I didn’t.” She was smiling, but she also had a look of wanting in her eyes.

“Do you, um, want me to help you with that?” I asked tentatively, not sure if I was crossing the line or not. All she could do was nod, her lips slightly parted, her tongue out, and I was to her in an instant. I got down on my knees in front of where she was standing, and started licking around her exposed pussy lips. She tasted exquisite, and I immediately grabbed her ass with my hands as I went down on her, eating her out. She didn’t last long, and was moaning in orgasm within less than a minute.

“Well, we aren’t supposed to get into oral sex until week 5,” Kate said from behind us. She had come into check on us, unbeknownst to either of us. “But it’s good that you guys are getting some practice in,” she said with a smile, “make sure you practice sixty-nine also”. We all started laughing, and the magic subsided. Rachel and I got dressed and we all left, but as we were walking to our cars, she asked me if I thought that Kate was serious about the sixty-nine and oral sex in week 5.

“I don’t know,” I responded, “but at this point nothing would surprise me. We’d better get practicing.”

Source: reddit.com/r/sexystories/comments/ej1anj/human_anatomy_and_sexuality_101_part_two_mf_exhib