I have spent many a sleepless night pondering the answer to that question myself. My intuition tells me it certainly seems plausible, but there are a number of variable factors you neglected to mention. How thick do you want the layer of feces to be? What texture/color/water ratio? In any case, before you even attempt such an endeavor, you should invest in at least 3 buckets of spicy KFC (extra crispy) with a lot of gravy on the side. If you'd get back to me on those variables, I'd be happy to make the necessary calculations.