Pornography:
1.writings, pictures, films, etc, designed to stimulate sexual excitement
2.the production of such material
-World English Dictionary- dictionary.com
ANYTHING that leads one into fornication or adultery in the heart is classified as pornography (graphic or not). Just because you do not watch "porn" does not mean you do not entertain pornography. Something as simple as you looking at pictures of someone you know that excites you sexually has just become pornography (even if the picture in it's self is "innocent").
The word pornography comes from the Greek word: 4202. porneia which is defined as: fornication, whoredom... Anything material that stimulate one sexually and leads ones heart into fornication or adultery becomes an object of pornography to that person. Pornography is a spirit, it effects the mind first and constructs material objects, anything that entertains this spirit is now an object of pornography, and idol. There are some things that are not "hardcore" as main stream porn but still are legal grounds for the spirit of pornography. Girls (also men; but especially women) in swim suits, tight cloths, revealing clothing even "athletic ear and tights". Jesus is Holy, anything that leads ones heart in to sexuality outside of marriage is sin, even if it was not created originally for that purpose.
18Flee fornication [pornia]. Every sin that a man does is outside the body; but he that commits fornication sins against his own body.
1 Corinthians 6
Fornication starts in the heart, so when you flee it starts with fleeing from the heart. Many think this means run from that one who you are tempted to sleep with, this means run from the very appearance of evil that starts inside of you.