Answer:
It rows quickly with four oars but never comes out from under its own roof. What is it?
Squeeze me and I cry tears as red as flesh, but my heart is made of stone. What am I?
I help you carry your books.
I am perfect with a head perfect without a head; Perfect with a tail perfect without a tail; Perfect with either neither or both.
I hold two meanings. With one I may be broken with the other I hold on.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.