Oh yes

Professor Miles starts pinching each girls' nipples to harden them but addresses the class.

"Up until now, and in your classes last semester, you have drawn still objects. Thus far, we've introduced the rotating platform that forces you to draw partly from memory and to manage your time. Now, we'll add another element - movement of the objects themselves. Girls, please start making out," he says it as if its no big deal.

Your girlfriend Eve and Lindsay hesitate, but then start kissing as they don't want to be embarrassed in front of the class again for hesitating. Your cock is raging hard. Part of you doesn't like that your girlfriend is being made to have her first lesbian experience - but the fact that they're both nude, pussies touching, making out far overshadows that. You look around and see several male students must feel the same way, they're openly jacking off.

Professor Miles sees this too and says, "Feel free to take care of yourselves, certainly, but for this period do NOT ejaculate on the models. If you must, please find another student. And mind your time - if you waste all your time with masturbation your work, and thus your grade, will suffer."

One kid is quick to finish, he shambles over to a chubby girl on his right and blows his load on her face before she even knows what's happening. You start drawing the sight in front of you and note Professor Miles sits near the stage, drinking in the sight, but keeps his cock in his pants.