As a male art model, I'm called on quite frequently to pose for classes at several area colleges, universities, and private art groups. There seem to be plenty of female models, but the instructors tell me that it's rare to find reliable male models. So, I help out when I can.
I've read many stories on this site telling of how models handled erections, and sometimes how the model was invited to use the erection on one of the female student artists, or even on a female instructor, after all the others had left the studio. Well, my story doesn't quite end up like that, although it would make exciting fiction. Also, I am happily married, and, so was the instructor. So, what I'll tell here was real-life.
I received a phone call from an art instructor I hadn't met or worked for, and she explained I'd been recommended by other instructors and could I please agree to posing for one night a week for the next three weeks? My calendar was clear, so I agreed. On the first meeting, we met, I got settled in, and the three-hour session went as planned. The class consisted of about a half a dozen undergraduate girls. The instructor was middle-age and quite attractive, and was dressed conservatively in a skirt and blouse. We all got along quite well. When posing, I always welcome casual conversation at the discretion of the instructor. I know we models are supposed to be just impersonal objects to draw and paint, but I don't mind projecting myself as a person, if it's appropriate to the class setting. During breaks, I reach for my robe and visit each easel to view some of the art in progress. (If this were fiction, I would write about walking around naked during the breaks, but that's not what professional models do!).
While posing, I'm not too worried about getting an erection. Usually, the pose is demanding and it's all I can do to just concentrate on balance, coming up with interesting poses, and following the artists' and instructor's requests. And, of course, dealing with muscles that really feel the strain during long poses. If my penis does start to fill out, it usually relaxes before it's noticeable. Some poses, like kneeling or bending at the waist, would conceal an erection, so if for some reason I feel one coming on, I'll choose one of those poses. However, a reclining pose, especially under warm lights, on a sofa with pillows, can easily lead to a hard-on. That's when I have to try counting backwards from two hundred in a foreign language. Usually works, but if it doesn't then I just live with it; everyone there is over 18. Also, the casual conversation during the longer poses helps: they ask me about my career, I ask them about their majors, and we almost always talk about preferences in music, and sometimes the instructor tunes in Pandora on a laptop. These distractions help pass the time, and also help with avoiding erections.