my New England puritan two cents: a nude person, (male or female) standing, sitting, lying is not porn. A sexual act (no..not kissing or hugging) could be considered in some way, porn. Bondage is definately porn. I think the viewer has to either look or not look. Myself, I would feel more relaxed looking at a female than a male.....
...and NO, the statue of David is not porn!