Beginning Anatomy Class , introduction to nude model. The instructor motions me over to the front of the class as he rattles off bone structure terminology signals me to lose the robe, which I did without hesitation. A lot of blushing and wide eyes. There was always one or two students that not had never seen a male nude. As I stood there in the anatomy stance it was these two that could barely contain themselves. , A heaviness in my penis, when I felt a wave of arousal, within a few seconds a full erection, throbbing wildly , with my scrotum rolling tight. Now I was blushing.