Answer:
When you stop and look, you can always see me. If you try to touch, you cannot feel me. I cannot move, but as you near me, I will move away from you.
My first master has four legs, my second master has two. My first I serve in life, my second I serve in death. Tough I am, yet soft beside. Against ladies cheeks I often reside.
A hole leading in, a hole leading out, we connect to a cavern that is slimy all throughout. What are we?
Who is it that rows quickly with four oars, but never comes out from under his own roof?
Who works when he plays and plays when he works?
When is it bad luck to see a black cat?