Just because something arouses someone, does not qualify it as pornography. If I were aroused by pictures of polar bears, would you consider that pornography as well? No, you wouldn't.
Pornography would be classified as something that portrays an explicit sex act, or in most cases, nudity. I don't think there is a problem with people having pictures such as the one you mentioned above, just as long as there is no nudity.
We have a very mature atmosphere (most times ;P) on this forum, and I don't really think its fair to the majority of the people here to force this much censorship just to cater to a few kids who might wander into here.
