Lesson Review w/ my Sex Ed Teacher (m/F) | 2016

Background: I have always had an interest in older women, but it wasn't until I turned 18 that I felt like I could pursue my fantasies. At my school there is a program where Seniors can assistant teach a health class to Sophomores. It counted as a gym class and it was good for college so I decided why not. I was assigned a teacher who was fairly new at teaching health, she was the school's dance teacher and thought that it would be fun to teach health too. She was about 5' 6" with black hair and was about 48. She had two kids who were slightly younger than me and she was divorced.
She had large tits and a nice perky ass that she showed off well by wearing black leggings everyday. Because I was an assistant teacher, she treated me as an equal, she always spoke her opinions and was very open and casual with me. We made jokes and she was constantly complimenting me. She would say things like "You're so smart." or "All the girls must be chasing after you!" When I told her I wanted to be a plastic surgeon she said "Have you seen Botched, I could totally see you as a celebrity plastic surgeon, you're so good looking."
I taught with her the last period of the day so after class I would stay and we would discuss the next days lesson. The next day was beginning sex ed. I teach lessons every so often, so she asked me if I wanted to teach male and female anatomy since I was in anatomy class. I was hesitant at first, feeling a bit uncomfortable at the thought of teaching a bunch of Sophomores about sexual anatomy. But I said "Sure, I could do that." We sat down and began to discuss the lesson. She took off her jacket to reveal a white tank top she had under it. I couldn't help but to glance at her cleavage. Although not the usual perky round cleavage produced by a push-up bra that I was used to with senior girls, her cleavage was amazing. I quickly looked by up from my glance, hoping she had not noticed, she was looking right at me. I looked at her feeling mortified. She laughed "Don't worry, I know how you teenage boys are." I wasn't sure if she was talking about my glance at her cleavage. But I laughed along. She then jokingly said "I'm flattered, I mean an old woman like me" "You're not old, you look good!" I replied going along with the joke. "You think so?" She said to me, suddenly changing her tone to a more serious note. "Yeah, I really do." I then to a chance. "So should we review before the lesson?" I looked her right in the eyes. As I said it my stomach turned, how was she going to reply? How was she going to interpret it?
She smiled at me "What do you have in mind?" I was now almost positive. The whole scenario got me excited and my cock became hard. I took off my jacket and caught her looking at the growing bulge in my pants. There was a moment of silence and we both stood up, walking closer and closer together. "Well...I uh...I was just thinking..." I was the just inches away from her face. Her tits toughed my chest as I stood looking down at as I was 4 inches taller than her. In a split second, we were making out. We stumbled to the classroom door and she locked it. I took off her tank top and bra to review the largest tits I had ever seen in person. They were DD and had a slight sag to them. I grabbed her tit and began to suck on her now hard nipple as she unbuttoned my shirt. I didn't have a condom but she said we didn't need one since she could no longer get pregnant. A health teacher offering unprotected sex, I was to horny to admire the irony. I picked her up and sat her on her desk as I pulled off her black leggings. I took off my belt and pants and finally freed my not rock hard cock. She grabbed me and flipped me onto the desk and then got on top. She knew exactly what she wanted and took full control. She rode my cock like no other and I came pretty quick. The sex with her was the best I had ever had. Although I had came, I continued to kiss, lick, and suck until I was ready once again. It was amazing. The second time I was able to last much longer, I rubbed her clit as she rode my cock and moaned. When we were done, she looked at me and smiled "Good lesson review, I think you're ready to teach the class!"