Got a stiffy in art class

I modeled for an art class this last weekend. The studio was nice and warm and during an hour long reclining pose I fell asleep. Some time during the pose I got an erection. Didn't know about it until afterwards I was looking at the drawings and nearly every artist, male and female had drawn me with an erection.

The idea of being hard in front of them, and the artists studying my swollen cock really turned me on. Couldn't wait until I got home so I rubbed one out in the car while driving.