Answer:
Of these things - I have two. One for me - and one for you. And when you ask about the price I simply smile and nod twice.
What has banks but no money a bed but no sleep waves but no ocean?
I have a little pool with two layers of wall around it. One white and soft and the other dark and hard. What am I?
What goes through cities and fields but never moves?
I am easy to see but no one likes looking at me. Without me there would be no you. I can make you complain or make you happy. But you almost always take me for-granted.
What language does a billboard speak?