A peeping-tom has published his study’s results in an appropriate forum.
A beautiful amputee is depicted with a knee-disorder, captioned by a corollary regarding eating in the latrine.
A weight loss program that involves you not collecting feces in your bowels.
One artist reminds us to keep the door to the sex trade open; while other artists ask us to consider consumerism both legally and illegally. Other advice (seemingly unrelated?) tells people to get erections and to defecate - possibly a redundant request, considering the setting.
Another thought wants the visitor to eat feces with fatal consequences, while another conflicting one demands the feces be eaten, but with salutary effects. Others still want the visitors to either nourish themselves or pass away; a clear line in the sand.