Answer:
I am the only thing that place today before yesterday. (one word)
I am perfect with a head perfect without a head; Perfect with a tail perfect without a tail; Perfect with either neither or both.
What goes up but never comes down?
I shrink smaller every time I take a bath. What am I?
I get dirty when wiping things clean. What am I?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.