autocoprophagy - (auto-co-pro-fa-gy)
What I thought it might mean: A gay man who has an obsession with making photocopies. In a conversation I would say "We don't know what to do with Pat because he has a serious case of Autocoprophagy and won't leave the office!"
What it really means: Eating one's own feces.
A correct sentence might be: "We're not hanging out with Pat anymore. His breath smells bad because he has a bad case of Autocoprophagy."
Let's hope that you don't have to use this word often in conversations, unless you are talking about your dog. . . eating one's own feces. I call that SICKO!