Answer:
It is sometimes known to have silver linings.
Turns us on our backs, and open up our stomachs. You will be the wisest of men though at start a lummox.
What goes further the slower it goes?
A hole leading in, a hole leading out, we connect to a cavern that is slimy all throughout. What are we?
Come up and let us go. Go down and here we stay
My days are numbered.