Answer:
What is never used unless it's in a tight place?
I wear a red robe, with staff in hand, and a stone in my throat.
Always old, sometimes new. Never sad, sometimes blue. Never empty, sometimes full. Never pushes, always pulls.
What goes in the water red, and comes out black?
What has a single eye but cannot see?
I am your mother's brother's only brother in law. Who am I?