I guess we're just not supposed to know these things yet somehow we find them out...
And that's the really amazing thing about these way out there fetishes. . .not only did somebody somewhere think it might be really hot have a hooker **** on his face, or to **** a plush racoon, or whatever, but then they had to run out and tell a friend "hey. . you know what
really does it for me??"
There is also a difference in Corprophilia, which is centered around a sexual fetish, and Scatplay which is more about doing something shameful or taboo. . .along the lines of cutting oneself. Working in college residence life, I've seen at least one case of scatplay come up every year and a half or so. It's really very sad. .. a compulsion to play with poo as some sort of self loathing act.
Scat, though, is a perfectly appropriate synonym for feces. Mainly used to describe droppings of wild animals . .. bear scat, deer scat, etc.
And finally. . this is by far my favorite Urbandictionary entry on the topic:
5. scat - turding all over a lovers head