I have been modeling for several years. My first time I did not get an erection, but after a few classes I became more relaxed. While posing in an early morning University drawing class, after taking a quite revealing pose. Not intending for this to happen, it was quite embarrassing, I developed a full-blown erection within a few seconds. At that moment I was going sit down for a break but the studio became unusually silent. I just was unable to bring myself to interrupt this increased concentration that was taking place . Holding the pose, with this erection so much pleasure I was deriving intense arousal. Precum flowed filling my urethra dripping . My heart beat strong the throbbing stiffness pleased me so. I so much enjoyed this prolonged exposed I closed my eyes wishing it would not end. The was silent just a few whispered words for the rest of the 15 minutes left in the pose. Retreating to the model dressing room The feverish masturbation, so intense, hot loads hitting the wall . After dressing and composing myself I emerged from my room. Only 3 students were still left in the room . Glancing at me and the clock as if I had been a long time. I smiled back. I wondered if I would get invited back. I was happy when I received multiple dates on my calendar to return.