Way to go, jackass. You're still in class, what the fuck are you doing watching porn? Plus, you're an idiot for not taking all safety precautions when doing something dumb, like, oh, unplugging the projector before getting so into your porn that you didn't notice IT WAS BEING PROJECTED, even when students tried to alert you to your idiocy.
I don't see anything wrong with the subject matter in question, and don't feel he should be judged by it. but, damn dude, there's a time and a place.