Pornography: Anything involving partial or full exposure of primary or the main part of secondary sexual organs under any context, or anything involving sexual acts (i.e. involving primary or secondary sexual organs, or WOULD involve them if you could make it out in the picture, statue or film) of any kind (such as a love scene in a movie, though passionate kissing alone won't qualify since I think lips would be tertiary in this case). Also any sexuality of any kind depicted between non heterosexuals.
Caveat: This is NOT an intellectual definition meant to be argued over between Coastal types and "Flyover" types - it is meant to fence off an area of human activity and label it, pat each other on the back, and get on with life. It won't (and doesn't) stand up to a lot of scrutiny, and as politicians in the Midwest don't want to be seen as mideval, will end up when pressed blustering out the typical "I know it when I see it" answers - even though I doubt they really believe Michelangelo's David is not porn.
I think that ought to do it.
Even people who are from "Flyover" (even me) who think they are and try to be enlightened, will at least feel (inwardly) mild discomfort when exposed to that sort of thing, even if it is meant to be artistic or "erotic" or whatever. It has been internalized - and is not an intellectual process. I suppose this is appropriate, since sexuality itself is not an intellectual process (how's THAT for rationalization! )
Since many other types won't have been raised with the above definition, and many have - I can see how there may be "debate" about it ....
[Now if this doesn't kill the thread ... I don't know what will! ]