I was a senior in high school was interested in ceramics and throwing pots on the wheel. A friend and I were also enrolled in a few classes at the local college of art and design. My friend was taking life drawing and I was so intrigued with the idea of posing naked in front of a classroom full of people. I could not stop thinking about it and eventually began asking questions and even going to the library to read up on life drawing and what it takes to become a nude model. At first I was doubtful that I would actually be hired to pose, having no experience or drawing and painting background. I knew I wanted to do it so I joined a gym , started familiarizing myself with different poses, and the terminology. I would fantasize about what it would feel like to be on stage naked and this would always lead to me getting an erection on the stage. Just the thought of it aroused me and fueled my masturbation sessions. Fearing being terminated if I was showing signs that I enjoyed it as much as I did I planned how I would keep myself from getting an erection.. When I felt I was ready to go to work I applied at 1 school and was put on the list of male models willing to pose nude. The Life Drawing instructor would call me in about 2 weeks with some bookings. I had done it. I was one step away from realizing my desire to be naked in a public setting. At home early , one thing on my mind, I threw off my clothes , grabbed my bottle of astro glide from my nightstand . A message on my voice mail, I was needed to fill in for a last-minute cancellation . I was to meet the TA at the studio at 6 this evening.. I excepted the booking and was so nervous and excited at the same time. To ease into it and I felt not thinking about it in a sexual way was all that I had to do to keep from getting an erection. The first time I stepped on the platform naked I had to mentally focus to suppress my penis from getting out of control. I think the cool night air and bright lights on my naked body made it very difficult to control yet I was able to. I was successful for the next three classes and was confident my method to controlling erections from developing was one that worked every time. I had filled my calendar with new bookings at several colleges and everything was going as planned. The feelings of embarrassment were fading with each session. The next class started as usual with half hour of quick gesture poses to warm up the students. Then the instructor told me we would have one pose that would span the rest of the class time and proceeded to set me up in a pose of her liking. Seated in a lounge chair slouching back creating a challenge in drawing foreshortening . When I was just right she marked my position on the chair with chalk. Reference points I could use get into the same posture after a break. The pose was going fine, then five minutes into it I was feeling some stirrings in my lower abdomen. Like before I mentally suppressed it and was relaxed again. After taking a break I regained my position in the pose and drawing resumed. A few minutes into the pose I felt some stirrings of arousal again, but, this time is was different. Before I could take a deep breath and mentally suppress any feeling of arousal my penis was lurching into full-blown erection. The studio went silent, all chit-chat stopped. I was caught off guard at this point I was not sure what to do. I am fired I know it, I thought to myself. I close my eyes and try to think it away with opposite effect. This attempt to regain control only added fuel to the fire and was futile. It seemed my entire body was throbbing . I was expecting to hear the instructors intervening words. I only heard the sounds of erasers on paper and of charcoal drawing on paper. I thought of stopping the pose then I heard a student ask the instructor for some help with her drawing. The instructor and the student analyzed,checked and measured, stood back and viewed me just as normal. All the while I was struggling to control my erection which was surging totally out of control. My breathing turned heavy , I stayed that way till break turning all shades of red feeling embarrassed of the obvious amount of pleasure I was getting out of my predicament. I was surprised that after I broke for break and the class partially emptied out I still could not make my erection go away. With nothing but my bathrobe on I stayed on the model platform the whole break. I expected to be fired, but was not. I was expecting to be asked to calm down, but was not. I was still erect when I was placing myself according to the chalk marks and I was coached into the final position by the students in the front aligning my position with what they had on paper. It might be difficult for some people to understand , the level of pleasure I feel ,lasting all day and into the night. Even after posing with an erection most of the 3 hours. I was asked to come back and even got some compliments about my modeling . The male body is natural in all forms and I found that my body in an aroused state is beautiful and worthy of being drawn. I am more relaxed in my modeling sessions (less nervous) and when erections happen the only thing that changes is the drawings.