If you ingest excrement, would you excrete excrement?

It's a well known fact a human body processes food into excrement after it's taken out all nutrients of it. But what if a human takes in his own excreta or of some other organism, (I know it's sick but it's not wrong to be curious isn't it?) would the body perform the same task, or finding out there's nothing to absorb in it, just send it right down to the ?